{"html":{".container--page":"\u003cdiv class=\"container container--page container--subject with-content-background\"\u003e\u003csection class=\"content content--medium aligned-right\"\u003e\u003cdiv class=\"filter-overlay\"\u003e\u003cdiv class=\"filter-overlay__loader\"\u003e\u003cdiv class=\"filter-overlay__icon\"\u003e\u003cdiv class=\"icon__circle icon-school\"\u003e\u003ci class=\"ma-school material-icons icon--medium\"\u003eschool\u003c/i\u003e\u003c/div\u003e\u003c/div\u003e\u003csvg class=\"circular\" viewBox=\"25 25 50 50\"\u003e\u003ccircle class=\"path\" cx=\"50\" cy=\"50\" fill=\"none\" r=\"20\" stroke-miterlimit=\"10\" stroke-width=\"2\"\u003e\u003c/circle\u003e\u003c/svg\u003e\u003c/div\u003e\u003cdiv class=\"filter-overlay__usp\"\u003e\u003cdiv class=\"as-h3\"\u003eAll ways of learning\u003c/div\u003e\u003cp\u003eMore than 50,000 training programmes and courses.\u003c/p\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv class=\"ajax-wrapper\"\u003e\u003ch1 class=\"subject__title\"\u003e334 Biology Training Courses\u003c/h1\u003e\u003cp class=\"subject__alternatives show-from-tablet\"\u003eSee also: \u003ca title=\"Health Management Training Courses\" rel=\"nofollow\" href=\"/work-safety/health-management/video\"\u003eHealth Management\u003c/a\u003e, \u003ca title=\"21 Anatomy Training Courses\" rel=\"nofollow\" href=\"/sciences/anatomy/video\"\u003eAnatomy\u003c/a\u003e, \u003ca title=\"75 Palliative Care Training Courses\" rel=\"nofollow\" href=\"/health/palliative-care/video\"\u003ePalliative Care\u003c/a\u003e, \u003ca title=\"331 Science Training Courses\" rel=\"nofollow\" href=\"/sciences/science/video\"\u003eScience\u003c/a\u003e, and \u003ca title=\"49 Education Training Courses\" rel=\"nofollow\" href=\"/education/education/video\"\u003eEducation\u003c/a\u003e.\u003c/p\u003e\u003cp class=\"subject__alternatives show-on-mobile\"\u003eSee also: \u003ca title=\"Health Management Training Courses\" rel=\"nofollow\" href=\"/work-safety/health-management/video\"\u003eHealth Management\u003c/a\u003e, \u003ca title=\"21 Anatomy Training Courses\" rel=\"nofollow\" href=\"/sciences/anatomy/video\"\u003eAnatomy\u003c/a\u003e, and \u003ca title=\"75 Palliative Care Training Courses\" rel=\"nofollow\" href=\"/health/palliative-care/video\"\u003ePalliative Care\u003c/a\u003e.\u003c/p\u003e\u003csection class=\"panel\"\u003e\u003cdiv class=\"result-options--mobile mobile-filter\"\u003e\u003cdiv class=\"mobile-filter__actions\"\u003e\u003ca class=\"toggle-mobile-filters mobile-filter__button\" href=\"#\"\u003e\u003ci class=\"ma-tune material-icons icon--normal\"\u003etune\u003c/i\u003e 1 active filter\u003c/a\u003e\u003ca class=\"toggle-mobile-sorting mobile-filter__button\" href=\"#\"\u003e\u003ci class=\"ma-reorder material-icons icon--normal\"\u003ereorder\u003c/i\u003e Sorting\u003c/a\u003e\u003c/div\u003e\u003cdiv class=\"mobile-filter__active-filters\"\u003e\u003cspan class=\"label--filter\"\u003eVideo\u003c/span\u003e\u003ca class=\"toggle-mobile-filters mobile-filter__edit\" href=\"#\"\u003eChange filters\u003ci class=\"ma-keyboard_arrow_right material-icons \"\u003ekeyboard_arrow_right\u003c/i\u003e\u003c/a\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv class=\"subject-messsages\"\u003e\u003c/div\u003e\u003cdiv class=\"result-options\"\u003e\u003cdiv class=\"compare-buttons--top\"\u003e\u003cinput class=\"button--compare\" type=\"button\" value=\"Compare\" /\u003e\u003c/div\u003e\u003cdiv class=\"sorting aligned-right\"\u003e\u003cdiv class=\"sorting__header\"\u003eChange sorting\u003ca class=\"sorting__close\" href=\"#\"\u003e\u003ci class=\"ma-clear material-icons icon--small\"\u003eclear\u003c/i\u003e\u003c/a\u003e\u003c/div\u003e\u003cdiv class=\"sorting__content\"\u003e\u003cspan class=\"sorting__label\"\u003eSort overview\u003c/span\u003e\u003cul class=\"sorting__list\"\u003e\u003cli class=\"sorting__item\"\u003e\u003ca class=\"sorting__link is-active\" data-url=\"/sciences/biology/video\" data-link-type=\"sort\" href=\"#\"\u003eRelevance and reviews\u003c/a\u003e\u003c/li\u003e\u003cli class=\"sorting__item\"\u003e\u003ca class=\"sorting__link \" data-url=\"/sciences/biology/video/price-high-low\" data-link-type=\"sort\" href=\"#\"\u003ePrice (high \u0026gt; 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These plants have found tre…\u003c/p\u003e\u003c/div\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv class=\"product-item__footer\"\u003e\u003cdiv class=\"product-item__usp-data\"\u003e\u003cspan class=\"method\"\u003eVideo\u003c/span\u003e\u003cspan class=\"price\"\u003eFree\u003cspan class=\"tooltip-parent tooltip-icon  align-left\"\u003e\u003ci class=\"ma-check material-icons \"\u003echeck\u003c/i\u003e\u003cspan class=\"tooltip align-left\"\u003e\u003cspan class=\"tooltip__content\"\u003e\u003cul class=\"price-tooltip\"\u003e\u003cli\u003e\u003cstrong\u003ePrice completeness:\u003c/strong\u003e This price is complete, there are no hidden additional costs.\u003c/li\u003e\u003c/ul\u003e\u003c/span\u003e\u003c/span\u003e\u003c/span\u003e\u003c/span\u003e\u003cspan class=\"duration\"\u003e11 minutes\u003c/span\u003e\u003c/div\u003e\u003cspan class=\"institute-rating rating-score\"\u003e\u003cdiv class=\"product-item__provider--mobile\"\u003e\u003cimg class=\"thumb\" width=\"100\" height=\"50\" alt=\"Logo Khan Academy\" title=\"Logo Khan Academy\" src=\"https://static-3.springest.com/uploads/institute/logo/14442/thumb_khan-academy-dbd7240e8ba3ca82c800ca3db25311a3.png\" /\u003e\u003c/div\u003e\u003c/span\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv class=\"result-item product-item\" id=\"training-434640\"\u003e\u003cdiv class=\"checkbox-wrapper\"\u003e\u003cinput type=\"checkbox\" name=\"training-434640\" id=\"training-434640\" value=\"434640\" class=\"is-hidden compare-list__checkbox compare-checkbox\" /\u003e\u003ci class=\"ma-check_box_outline_blank material-icons checkbox-icon\" data-checked=\"check_box\" data-unchecked=\"check_box_outline_blank\"\u003echeck_box_outline_blank\u003c/i\u003e\u003c/div\u003e\u003cdiv class=\"product-item__thumb\"\u003e\u003ca class=\" track\" data-tracking-events=\"[]\" href=\"/khan-academy/biology-introduction-to-evolution-and-natural-selection\"\u003e\u003cdiv class=\"product-image__video-thumbnail-btn small-square\" style=\"background-image: url(https://static-3.springest.com/uploads/product_image/image/59543/thumbnail-unnamed.png)\"\u003e\u003c/div\u003e\u003c/a\u003e\u003c/div\u003e\u003cdiv class=\"product-item__content\"\u003e\u003ch2 class=\"as-h3 product-item__title\"\u003e\u003ca title=\"Video: Biology: Introduction to evolution and natural selection\" href=\"/khan-academy/biology-introduction-to-evolution-and-natural-selection\"\u003eBiology: Introduction to evolution and natural selection\u003c/a\u003e\u003c/h2\u003e\u003cdiv class=\"product-item__details\"\u003e\u003cdiv class=\"product-item__provider\"\u003e\u003cimg class=\"thumb\" width=\"100\" height=\"50\" alt=\"Logo Khan Academy\" title=\"Logo Khan Academy\" src=\"https://static-3.springest.com/uploads/institute/logo/14442/thumb_khan-academy-dbd7240e8ba3ca82c800ca3db25311a3.png\" /\u003e\u003c/div\u003e\u003cdiv class=\"product-item__meta-info starting-dateplaces-container\"\u003e\u003cdiv class=\"meta-info--starting-dateplaces\"\u003e\u003cspan\u003e\u003c/span\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv class=\"product-item__description\"\u003e\u003cdiv class=\"product-item__thumb--mobile\"\u003e\u003ca class=\" track\" data-tracking-events=\"[]\" href=\"/khan-academy/biology-introduction-to-evolution-and-natural-selection#product-images\"\u003e\u003cimg class=\"product-image__item\" src=\"https://static-3.springest.com/uploads/product_image/image/59543/thumbnail-unnamed.png\" /\u003e\u003c/a\u003e\u003c/div\u003e\u003cp\u003eIntroduction to how groups of organisms evolve and how natural selection can lead to evolution. Biology Life is beautiful! From atoms to ce…\u003c/p\u003e\u003c/div\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv class=\"product-item__footer\"\u003e\u003cdiv class=\"product-item__usp-data\"\u003e\u003cspan class=\"method\"\u003eVideo\u003c/span\u003e\u003cspan class=\"price\"\u003eFree\u003cspan class=\"tooltip-parent tooltip-icon  align-left\"\u003e\u003ci class=\"ma-check material-icons \"\u003echeck\u003c/i\u003e\u003cspan class=\"tooltip align-left\"\u003e\u003cspan class=\"tooltip__content\"\u003e\u003cul class=\"price-tooltip\"\u003e\u003cli\u003e\u003cstrong\u003ePrice completeness:\u003c/strong\u003e This price is complete, there are no hidden additional costs.\u003c/li\u003e\u003c/ul\u003e\u003c/span\u003e\u003c/span\u003e\u003c/span\u003e\u003c/span\u003e\u003cspan class=\"duration\"\u003e18 minutes\u003c/span\u003e\u003c/div\u003e\u003cspan class=\"institute-rating rating-score\"\u003e\u003cdiv class=\"product-item__provider--mobile\"\u003e\u003cimg class=\"thumb\" width=\"100\" height=\"50\" alt=\"Logo Khan Academy\" title=\"Logo Khan Academy\" src=\"https://static-3.springest.com/uploads/institute/logo/14442/thumb_khan-academy-dbd7240e8ba3ca82c800ca3db25311a3.png\" /\u003e\u003c/div\u003e\u003c/span\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv class=\"result-item product-item\" id=\"training-434778\"\u003e\u003cdiv class=\"checkbox-wrapper\"\u003e\u003cinput type=\"checkbox\" name=\"training-434778\" id=\"training-434778\" value=\"434778\" class=\"is-hidden compare-list__checkbox compare-checkbox\" /\u003e\u003ci class=\"ma-check_box_outline_blank material-icons checkbox-icon\" data-checked=\"check_box\" data-unchecked=\"check_box_outline_blank\"\u003echeck_box_outline_blank\u003c/i\u003e\u003c/div\u003e\u003cdiv class=\"product-item__thumb\"\u003e\u003ca class=\" track\" data-tracking-events=\"[]\" href=\"/khan-academy/biology-ecosystem-ecology-links-in-the-chain\"\u003e\u003cdiv class=\"product-image__video-thumbnail-btn small-square\" style=\"background-image: url(https://static-3.springest.com/uploads/product_image/image/59685/thumbnail-unnamed.png)\"\u003e\u003c/div\u003e\u003c/a\u003e\u003c/div\u003e\u003cdiv class=\"product-item__content\"\u003e\u003ch2 class=\"as-h3 product-item__title\"\u003e\u003ca title=\"Video: Biology: Ecosystem ecology: Links in the chain\" href=\"/khan-academy/biology-ecosystem-ecology-links-in-the-chain\"\u003eBiology: Ecosystem ecology: Links in the chain\u003c/a\u003e\u003c/h2\u003e\u003cdiv class=\"product-item__details\"\u003e\u003cdiv class=\"product-item__provider\"\u003e\u003cimg class=\"thumb\" width=\"100\" height=\"50\" alt=\"Logo Khan Academy\" title=\"Logo Khan Academy\" src=\"https://static-3.springest.com/uploads/institute/logo/14442/thumb_khan-academy-dbd7240e8ba3ca82c800ca3db25311a3.png\" /\u003e\u003c/div\u003e\u003cdiv class=\"product-item__meta-info starting-dateplaces-container\"\u003e\u003cdiv class=\"meta-info--starting-dateplaces\"\u003e\u003cspan\u003e\u003c/span\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv class=\"product-item__description\"\u003e\u003cdiv class=\"product-item__thumb--mobile\"\u003e\u003ca class=\" track\" data-tracking-events=\"[]\" href=\"/khan-academy/biology-ecosystem-ecology-links-in-the-chain#product-images\"\u003e\u003cimg class=\"product-image__item\" src=\"https://static-3.springest.com/uploads/product_image/image/59685/thumbnail-unnamed.png\" /\u003e\u003c/a\u003e\u003c/div\u003e\u003cp\u003eHank discusses ecosystems, trophic structure, and the flow of energy through food webs. Biology Life is beautiful! From atoms to cells, fro…\u003c/p\u003e\u003c/div\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv class=\"product-item__footer\"\u003e\u003cdiv class=\"product-item__usp-data\"\u003e\u003cspan class=\"method\"\u003eVideo\u003c/span\u003e\u003cspan class=\"price\"\u003eFree\u003cspan class=\"tooltip-parent tooltip-icon  align-left\"\u003e\u003ci class=\"ma-check material-icons \"\u003echeck\u003c/i\u003e\u003cspan class=\"tooltip align-left\"\u003e\u003cspan class=\"tooltip__content\"\u003e\u003cul class=\"price-tooltip\"\u003e\u003cli\u003e\u003cstrong\u003ePrice completeness:\u003c/strong\u003e This price is complete, there are no hidden additional costs.\u003c/li\u003e\u003c/ul\u003e\u003c/span\u003e\u003c/span\u003e\u003c/span\u003e\u003c/span\u003e\u003cspan class=\"duration\"\u003e10 minutes\u003c/span\u003e\u003c/div\u003e\u003cspan class=\"institute-rating rating-score\"\u003e\u003cdiv class=\"product-item__provider--mobile\"\u003e\u003cimg class=\"thumb\" width=\"100\" height=\"50\" alt=\"Logo Khan Academy\" title=\"Logo Khan Academy\" src=\"https://static-3.springest.com/uploads/institute/logo/14442/thumb_khan-academy-dbd7240e8ba3ca82c800ca3db25311a3.png\" /\u003e\u003c/div\u003e\u003c/span\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv class=\"result-item product-item\" id=\"training-434591\"\u003e\u003cdiv class=\"checkbox-wrapper\"\u003e\u003cinput type=\"checkbox\" name=\"training-434591\" id=\"training-434591\" value=\"434591\" class=\"is-hidden compare-list__checkbox compare-checkbox\" /\u003e\u003ci class=\"ma-check_box_outline_blank material-icons checkbox-icon\" data-checked=\"check_box\" data-unchecked=\"check_box_outline_blank\"\u003echeck_box_outline_blank\u003c/i\u003e\u003c/div\u003e\u003cdiv class=\"product-item__thumb\"\u003e\u003ca class=\" track\" data-tracking-events=\"[]\" href=\"/khan-academy/biology-oxidative-phosphorylation-and-the-electron-transport-chain\"\u003e\u003cdiv class=\"product-image__video-thumbnail-btn small-square\" style=\"background-image: url(https://static-3.springest.com/uploads/product_image/image/59495/thumbnail-unnamed.png)\"\u003e\u003c/div\u003e\u003c/a\u003e\u003c/div\u003e\u003cdiv class=\"product-item__content\"\u003e\u003ch2 class=\"as-h3 product-item__title\"\u003e\u003ca title=\"Video: Biology: Oxidative phosphorylation and the electron transport chain\" href=\"/khan-academy/biology-oxidative-phosphorylation-and-the-electron-transport-chain\"\u003eBiology: Oxidative phosphorylation and the electron transport chain\u003c/a\u003e\u003c/h2\u003e\u003cdiv class=\"product-item__details\"\u003e\u003cdiv class=\"product-item__provider\"\u003e\u003cimg class=\"thumb\" width=\"100\" height=\"50\" alt=\"Logo Khan Academy\" title=\"Logo Khan Academy\" src=\"https://static-3.springest.com/uploads/institute/logo/14442/thumb_khan-academy-dbd7240e8ba3ca82c800ca3db25311a3.png\" /\u003e\u003c/div\u003e\u003cdiv class=\"product-item__meta-info starting-dateplaces-container\"\u003e\u003cdiv class=\"meta-info--starting-dateplaces\"\u003e\u003cspan\u003e\u003c/span\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv class=\"product-item__description\"\u003e\u003cdiv class=\"product-item__thumb--mobile\"\u003e\u003ca class=\" track\" data-tracking-events=\"[]\" href=\"/khan-academy/biology-oxidative-phosphorylation-and-the-electron-transport-chain#product-images\"\u003e\u003cimg class=\"product-image__item\" src=\"https://static-3.springest.com/uploads/product_image/image/59495/thumbnail-unnamed.png\" /\u003e\u003c/a\u003e\u003c/div\u003e\u003cp\u003eHow oxidation of co-enzymes like NADH can lead to the production of ATP through oxidative phosphorylation. Biology Life is beautiful! From …\u003c/p\u003e\u003c/div\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv class=\"product-item__footer\"\u003e\u003cdiv class=\"product-item__usp-data\"\u003e\u003cspan class=\"method\"\u003eVideo\u003c/span\u003e\u003cspan class=\"price\"\u003eFree\u003cspan class=\"tooltip-parent tooltip-icon  align-left\"\u003e\u003ci class=\"ma-check material-icons \"\u003echeck\u003c/i\u003e\u003cspan class=\"tooltip align-left\"\u003e\u003cspan class=\"tooltip__content\"\u003e\u003cul class=\"price-tooltip\"\u003e\u003cli\u003e\u003cstrong\u003ePrice completeness:\u003c/strong\u003e This price is complete, there are no hidden additional costs.\u003c/li\u003e\u003c/ul\u003e\u003c/span\u003e\u003c/span\u003e\u003c/span\u003e\u003c/span\u003e\u003cspan class=\"duration\"\u003e16 minutes\u003c/span\u003e\u003c/div\u003e\u003cspan class=\"institute-rating rating-score\"\u003e\u003cdiv class=\"product-item__provider--mobile\"\u003e\u003cimg class=\"thumb\" width=\"100\" height=\"50\" alt=\"Logo Khan Academy\" title=\"Logo Khan Academy\" src=\"https://static-3.springest.com/uploads/institute/logo/14442/thumb_khan-academy-dbd7240e8ba3ca82c800ca3db25311a3.png\" /\u003e\u003c/div\u003e\u003c/span\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv class=\"result-item product-item\" id=\"training-434691\"\u003e\u003cdiv class=\"checkbox-wrapper\"\u003e\u003cinput type=\"checkbox\" name=\"training-434691\" id=\"training-434691\" value=\"434691\" class=\"is-hidden compare-list__checkbox compare-checkbox\" /\u003e\u003ci class=\"ma-check_box_outline_blank material-icons checkbox-icon\" data-checked=\"check_box\" data-unchecked=\"check_box_outline_blank\"\u003echeck_box_outline_blank\u003c/i\u003e\u003c/div\u003e\u003cdiv class=\"product-item__thumb\"\u003e\u003ca class=\" track\" data-tracking-events=\"[]\" href=\"/khan-academy/biology-new-localities-lead-to-new-biodiversity\"\u003e\u003cdiv class=\"product-image__video-thumbnail-btn small-square\" style=\"background-image: url(https://static-3.springest.com/uploads/product_image/image/59590/thumbnail-unnamed.png)\"\u003e\u003c/div\u003e\u003c/a\u003e\u003c/div\u003e\u003cdiv class=\"product-item__content\"\u003e\u003ch2 class=\"as-h3 product-item__title\"\u003e\u003ca title=\"Video: Biology: New localities lead to new biodiversity\" href=\"/khan-academy/biology-new-localities-lead-to-new-biodiversity\"\u003eBiology: New localities lead to new biodiversity\u003c/a\u003e\u003c/h2\u003e\u003cdiv class=\"product-item__details\"\u003e\u003cdiv class=\"product-item__provider\"\u003e\u003cimg class=\"thumb\" width=\"100\" height=\"50\" alt=\"Logo Khan Academy\" title=\"Logo Khan Academy\" src=\"https://static-3.springest.com/uploads/institute/logo/14442/thumb_khan-academy-dbd7240e8ba3ca82c800ca3db25311a3.png\" /\u003e\u003c/div\u003e\u003cdiv class=\"product-item__meta-info starting-dateplaces-container\"\u003e\u003cdiv class=\"meta-info--starting-dateplaces\"\u003e\u003cspan\u003e\u003c/span\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv class=\"product-item__description\"\u003e\u003cdiv class=\"product-item__thumb--mobile\"\u003e\u003ca class=\" track\" data-tracking-events=\"[]\" href=\"/khan-academy/biology-new-localities-lead-to-new-biodiversity#product-images\"\u003e\u003cimg class=\"product-image__item\" src=\"https://static-3.springest.com/uploads/product_image/image/59590/thumbnail-unnamed.png\" /\u003e\u003c/a\u003e\u003c/div\u003e\u003cp\u003eBiology Life is beautiful! From atoms to cells, from genes to proteins, from populations to ecosystems, biology is the study of the fascina…\u003c/p\u003e\u003c/div\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv class=\"product-item__footer\"\u003e\u003cdiv class=\"product-item__usp-data\"\u003e\u003cspan class=\"method\"\u003eVideo\u003c/span\u003e\u003cspan class=\"price\"\u003eFree\u003cspan class=\"tooltip-parent tooltip-icon  align-left\"\u003e\u003ci class=\"ma-check material-icons \"\u003echeck\u003c/i\u003e\u003cspan class=\"tooltip align-left\"\u003e\u003cspan class=\"tooltip__content\"\u003e\u003cul class=\"price-tooltip\"\u003e\u003cli\u003e\u003cstrong\u003ePrice completeness:\u003c/strong\u003e This price is complete, there are no hidden additional costs.\u003c/li\u003e\u003c/ul\u003e\u003c/span\u003e\u003c/span\u003e\u003c/span\u003e\u003c/span\u003e\u003cspan class=\"duration\"\u003e11 minutes\u003c/span\u003e\u003c/div\u003e\u003cspan class=\"institute-rating rating-score\"\u003e\u003cdiv class=\"product-item__provider--mobile\"\u003e\u003cimg class=\"thumb\" width=\"100\" height=\"50\" alt=\"Logo Khan Academy\" title=\"Logo Khan Academy\" src=\"https://static-3.springest.com/uploads/institute/logo/14442/thumb_khan-academy-dbd7240e8ba3ca82c800ca3db25311a3.png\" /\u003e\u003c/div\u003e\u003c/span\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv class=\"result-item product-item\" id=\"training-434783\"\u003e\u003cdiv class=\"checkbox-wrapper\"\u003e\u003cinput type=\"checkbox\" name=\"training-434783\" id=\"training-434783\" value=\"434783\" class=\"is-hidden compare-list__checkbox compare-checkbox\" /\u003e\u003ci class=\"ma-check_box_outline_blank material-icons checkbox-icon\" data-checked=\"check_box\" data-unchecked=\"check_box_outline_blank\"\u003echeck_box_outline_blank\u003c/i\u003e\u003c/div\u003e\u003cdiv class=\"product-item__thumb\"\u003e\u003ca class=\" track\" data-tracking-events=\"[]\" href=\"/khan-academy/biology-conservation-and-restoration-ecology\"\u003e\u003cdiv class=\"product-image__video-thumbnail-btn small-square\" style=\"background-image: url(https://static-3.springest.com/uploads/product_image/image/59683/thumbnail-unnamed.png)\"\u003e\u003c/div\u003e\u003c/a\u003e\u003c/div\u003e\u003cdiv class=\"product-item__content\"\u003e\u003ch2 class=\"as-h3 product-item__title\"\u003e\u003ca title=\"Video: Biology: Conservation and restoration ecology\" href=\"/khan-academy/biology-conservation-and-restoration-ecology\"\u003eBiology: Conservation and restoration ecology\u003c/a\u003e\u003c/h2\u003e\u003cdiv class=\"product-item__details\"\u003e\u003cdiv class=\"product-item__provider\"\u003e\u003cimg class=\"thumb\" width=\"100\" height=\"50\" alt=\"Logo Khan Academy\" title=\"Logo Khan Academy\" src=\"https://static-3.springest.com/uploads/institute/logo/14442/thumb_khan-academy-dbd7240e8ba3ca82c800ca3db25311a3.png\" /\u003e\u003c/div\u003e\u003cdiv class=\"product-item__meta-info starting-dateplaces-container\"\u003e\u003cdiv class=\"meta-info--starting-dateplaces\"\u003e\u003cspan\u003e\u003c/span\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv class=\"product-item__description\"\u003e\u003cdiv class=\"product-item__thumb--mobile\"\u003e\u003ca class=\" track\" data-tracking-events=\"[]\" href=\"/khan-academy/biology-conservation-and-restoration-ecology#product-images\"\u003e\u003cimg class=\"product-image__item\" src=\"https://static-3.springest.com/uploads/product_image/image/59683/thumbnail-unnamed.png\" /\u003e\u003c/a\u003e\u003c/div\u003e\u003cp\u003eHank discusses different types of biodiversity, as well as how biodiversity can be measured, preserved, and restored. Biology Life is beaut…\u003c/p\u003e\u003c/div\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv class=\"product-item__footer\"\u003e\u003cdiv class=\"product-item__usp-data\"\u003e\u003cspan class=\"method\"\u003eVideo\u003c/span\u003e\u003cspan class=\"price\"\u003eFree\u003cspan class=\"tooltip-parent tooltip-icon  align-left\"\u003e\u003ci class=\"ma-check material-icons \"\u003echeck\u003c/i\u003e\u003cspan class=\"tooltip align-left\"\u003e\u003cspan class=\"tooltip__content\"\u003e\u003cul class=\"price-tooltip\"\u003e\u003cli\u003e\u003cstrong\u003ePrice completeness:\u003c/strong\u003e This price is complete, there are no hidden additional costs.\u003c/li\u003e\u003c/ul\u003e\u003c/span\u003e\u003c/span\u003e\u003c/span\u003e\u003c/span\u003e\u003cspan class=\"duration\"\u003e10 minutes\u003c/span\u003e\u003c/div\u003e\u003cspan class=\"institute-rating rating-score\"\u003e\u003cdiv class=\"product-item__provider--mobile\"\u003e\u003cimg class=\"thumb\" width=\"100\" height=\"50\" alt=\"Logo Khan Academy\" title=\"Logo Khan Academy\" src=\"https://static-3.springest.com/uploads/institute/logo/14442/thumb_khan-academy-dbd7240e8ba3ca82c800ca3db25311a3.png\" /\u003e\u003c/div\u003e\u003c/span\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv class=\"result-item product-item\" id=\"training-434498\"\u003e\u003cdiv class=\"checkbox-wrapper\"\u003e\u003cinput type=\"checkbox\" name=\"training-434498\" id=\"training-434498\" value=\"434498\" class=\"is-hidden compare-list__checkbox compare-checkbox\" /\u003e\u003ci class=\"ma-check_box_outline_blank material-icons checkbox-icon\" data-checked=\"check_box\" data-unchecked=\"check_box_outline_blank\"\u003echeck_box_outline_blank\u003c/i\u003e\u003c/div\u003e\u003cdiv class=\"product-item__thumb\"\u003e\u003ca class=\" track\" data-tracking-events=\"[]\" href=\"/khan-academy/biology-the-scientific-method\"\u003e\u003cdiv class=\"product-image__video-thumbnail-btn small-square\" style=\"background-image: url(https://static-3.springest.com/uploads/product_image/image/59421/thumbnail-unnamed.png)\"\u003e\u003c/div\u003e\u003c/a\u003e\u003c/div\u003e\u003cdiv class=\"product-item__content\"\u003e\u003ch2 class=\"as-h3 product-item__title\"\u003e\u003ca title=\"Video: Biology: The scientific method\" href=\"/khan-academy/biology-the-scientific-method\"\u003eBiology: The scientific method\u003c/a\u003e\u003c/h2\u003e\u003cdiv class=\"product-item__details\"\u003e\u003cdiv class=\"product-item__provider\"\u003e\u003cimg class=\"thumb\" width=\"100\" height=\"50\" alt=\"Logo Khan Academy\" title=\"Logo Khan Academy\" src=\"https://static-3.springest.com/uploads/institute/logo/14442/thumb_khan-academy-dbd7240e8ba3ca82c800ca3db25311a3.png\" /\u003e\u003c/div\u003e\u003cdiv class=\"product-item__meta-info starting-dateplaces-container\"\u003e\u003cdiv class=\"meta-info--starting-dateplaces\"\u003e\u003cspan\u003e\u003c/span\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv class=\"product-item__description\"\u003e\u003cdiv class=\"product-item__thumb--mobile\"\u003e\u003ca class=\" track\" data-tracking-events=\"[]\" href=\"/khan-academy/biology-the-scientific-method#product-images\"\u003e\u003cimg class=\"product-image__item\" src=\"https://static-3.springest.com/uploads/product_image/image/59421/thumbnail-unnamed.png\" /\u003e\u003c/a\u003e\u003c/div\u003e\u003cp\u003eHow the scientific method is used to ask questions and test explanations. Biology Life is beautiful! From atoms to cells, from genes to pro…\u003c/p\u003e\u003c/div\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv class=\"product-item__footer\"\u003e\u003cdiv class=\"product-item__usp-data\"\u003e\u003cspan class=\"method\"\u003eVideo\u003c/span\u003e\u003cspan class=\"price\"\u003eFree\u003cspan class=\"tooltip-parent tooltip-icon  align-left\"\u003e\u003ci class=\"ma-check material-icons \"\u003echeck\u003c/i\u003e\u003cspan class=\"tooltip align-left\"\u003e\u003cspan class=\"tooltip__content\"\u003e\u003cul class=\"price-tooltip\"\u003e\u003cli\u003e\u003cstrong\u003ePrice completeness:\u003c/strong\u003e This price is complete, there are no hidden additional costs.\u003c/li\u003e\u003c/ul\u003e\u003c/span\u003e\u003c/span\u003e\u003c/span\u003e\u003c/span\u003e\u003cspan class=\"duration\"\u003e12 minutes\u003c/span\u003e\u003c/div\u003e\u003cspan class=\"institute-rating rating-score\"\u003e\u003cdiv class=\"product-item__provider--mobile\"\u003e\u003cimg class=\"thumb\" width=\"100\" height=\"50\" alt=\"Logo Khan Academy\" title=\"Logo Khan Academy\" src=\"https://static-3.springest.com/uploads/institute/logo/14442/thumb_khan-academy-dbd7240e8ba3ca82c800ca3db25311a3.png\" /\u003e\u003c/div\u003e\u003c/span\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv class=\"result-item product-item\" id=\"training-433984\"\u003e\u003cdiv class=\"checkbox-wrapper\"\u003e\u003cinput type=\"checkbox\" name=\"training-433984\" id=\"training-433984\" value=\"433984\" class=\"is-hidden compare-list__checkbox compare-checkbox\" /\u003e\u003ci class=\"ma-check_box_outline_blank material-icons checkbox-icon\" data-checked=\"check_box\" data-unchecked=\"check_box_outline_blank\"\u003echeck_box_outline_blank\u003c/i\u003e\u003c/div\u003e\u003cdiv class=\"product-item__thumb\"\u003e\u003ca class=\" track\" data-tracking-events=\"[]\" href=\"/khan-academy/2015-ap-biology-free-response-6\"\u003e\u003cdiv class=\"product-image__video-thumbnail-btn small-square\" style=\"background-image: url(https://static-3.springest.com/uploads/product_image/image/18233/thumbnail-unnamed.png)\"\u003e\u003c/div\u003e\u003c/a\u003e\u003c/div\u003e\u003cdiv class=\"product-item__content\"\u003e\u003ch2 class=\"as-h3 product-item__title\"\u003e\u003ca title=\"Video: Biology: 2015 AP Biology free response 6\" href=\"/khan-academy/2015-ap-biology-free-response-6\"\u003eBiology: 2015 AP Biology free response 6\u003c/a\u003e\u003c/h2\u003e\u003cdiv class=\"product-item__details\"\u003e\u003cdiv class=\"product-item__provider\"\u003e\u003cimg class=\"thumb\" width=\"100\" height=\"50\" alt=\"Logo Khan Academy\" title=\"Logo Khan Academy\" src=\"https://static-3.springest.com/uploads/institute/logo/14442/thumb_khan-academy-dbd7240e8ba3ca82c800ca3db25311a3.png\" /\u003e\u003c/div\u003e\u003cdiv class=\"product-item__meta-info starting-dateplaces-container\"\u003e\u003cdiv class=\"meta-info--starting-dateplaces\"\u003e\u003cspan\u003e\u003c/span\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv class=\"product-item__description\"\u003e\u003cdiv class=\"product-item__thumb--mobile\"\u003e\u003ca class=\" track\" data-tracking-events=\"[]\" href=\"/khan-academy/2015-ap-biology-free-response-6#product-images\"\u003e\u003cimg class=\"product-image__item\" src=\"https://static-3.springest.com/uploads/product_image/image/18233/thumbnail-unnamed.png\" /\u003e\u003c/a\u003e\u003c/div\u003e\u003cp\u003eFixing a declining snake population. Biology Life is beautiful! From atoms to cells, from genes to proteins, from populations to ecosystems…\u003c/p\u003e\u003c/div\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv class=\"product-item__footer\"\u003e\u003cdiv class=\"product-item__usp-data\"\u003e\u003cspan class=\"method\"\u003eVideo\u003c/span\u003e\u003cspan class=\"price\"\u003eFree\u003cspan class=\"tooltip-parent tooltip-icon  align-left\"\u003e\u003ci class=\"ma-check material-icons \"\u003echeck\u003c/i\u003e\u003cspan class=\"tooltip align-left\"\u003e\u003cspan class=\"tooltip__content\"\u003e\u003cul class=\"price-tooltip\"\u003e\u003cli\u003e\u003cstrong\u003ePrice completeness:\u003c/strong\u003e This price is complete, there are no hidden additional costs.\u003c/li\u003e\u003c/ul\u003e\u003c/span\u003e\u003c/span\u003e\u003c/span\u003e\u003c/span\u003e\u003cspan class=\"duration\"\u003e6 minutes\u003c/span\u003e\u003c/div\u003e\u003cspan class=\"institute-rating rating-score\"\u003e\u003cdiv class=\"product-item__provider--mobile\"\u003e\u003cimg class=\"thumb\" width=\"100\" height=\"50\" alt=\"Logo Khan Academy\" title=\"Logo Khan Academy\" src=\"https://static-3.springest.com/uploads/institute/logo/14442/thumb_khan-academy-dbd7240e8ba3ca82c800ca3db25311a3.png\" /\u003e\u003c/div\u003e\u003c/span\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv class=\"result-item product-item\" id=\"training-576618\"\u003e\u003cdiv class=\"checkbox-wrapper\"\u003e\u003cinput type=\"checkbox\" name=\"training-576618\" id=\"training-576618\" value=\"576618\" class=\"is-hidden compare-list__checkbox compare-checkbox\" /\u003e\u003ci class=\"ma-check_box_outline_blank material-icons checkbox-icon\" data-checked=\"check_box\" data-unchecked=\"check_box_outline_blank\"\u003echeck_box_outline_blank\u003c/i\u003e\u003c/div\u003e\u003cdiv class=\"product-item__content\"\u003e\u003ch2 class=\"as-h3 product-item__title\"\u003e\u003ca title=\"Video: High school biology: Introduction to lipids\" href=\"/khan-academy/high-school-biology-introduction-to-lipids\"\u003eHigh school biology: Introduction to lipids\u003c/a\u003e\u003c/h2\u003e\u003cdiv class=\"product-item__details\"\u003e\u003cdiv class=\"product-item__provider\"\u003e\u003cimg class=\"thumb\" width=\"100\" height=\"50\" alt=\"Logo Khan Academy\" title=\"Logo Khan Academy\" src=\"https://static-3.springest.com/uploads/institute/logo/14442/thumb_khan-academy-dbd7240e8ba3ca82c800ca3db25311a3.png\" /\u003e\u003c/div\u003e\u003cdiv class=\"product-item__meta-info starting-dateplaces-container\"\u003e\u003cdiv class=\"meta-info--starting-dateplaces\"\u003e\u003cspan\u003e\u003c/span\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv class=\"product-item__description\"\u003e\u003cp\u003eIntroduction to lipids like fats and phospholipids High school biology Biological macromolecules There\u0026#39;s an old saying, \u0026quot;You are what you e…\u003c/p\u003e\u003c/div\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv 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url(https://static-3.springest.com/uploads/product_image/image/59541/thumbnail-unnamed.png)\"\u003e\u003c/div\u003e\u003c/a\u003e\u003c/div\u003e\u003cdiv class=\"product-item__content\"\u003e\u003ch2 class=\"as-h3 product-item__title\"\u003e\u003ca title=\"Video: Biology: Bacteria\" href=\"/khan-academy/biology-bacteria\"\u003eBiology: Bacteria\u003c/a\u003e\u003c/h2\u003e\u003cdiv class=\"product-item__details\"\u003e\u003cdiv class=\"product-item__provider\"\u003e\u003cimg class=\"thumb\" width=\"100\" height=\"50\" alt=\"Logo Khan Academy\" title=\"Logo Khan Academy\" src=\"https://static-3.springest.com/uploads/institute/logo/14442/thumb_khan-academy-dbd7240e8ba3ca82c800ca3db25311a3.png\" /\u003e\u003c/div\u003e\u003cdiv class=\"product-item__meta-info starting-dateplaces-container\"\u003e\u003cdiv class=\"meta-info--starting-dateplaces\"\u003e\u003cspan\u003e\u003c/span\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv class=\"product-item__description\"\u003e\u003cdiv class=\"product-item__thumb--mobile\"\u003e\u003ca class=\" track\" data-tracking-events=\"[]\" href=\"/khan-academy/biology-bacteria#product-images\"\u003e\u003cimg class=\"product-image__item\" src=\"https://static-3.springest.com/uploads/product_image/image/59541/thumbnail-unnamed.png\" /\u003e\u003c/a\u003e\u003c/div\u003e\u003cp\u003eIntroduction to bacteria. Biology Life is beautiful! 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Learn about chromosomes, chromatids, and chromatin.…\u003c/p\u003e\u003c/div\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv class=\"product-item__footer\"\u003e\u003cdiv class=\"product-item__usp-data\"\u003e\u003cspan class=\"method\"\u003eVideo\u003c/span\u003e\u003cspan class=\"price\"\u003eFree\u003cspan class=\"tooltip-parent tooltip-icon  align-left\"\u003e\u003ci class=\"ma-check material-icons \"\u003echeck\u003c/i\u003e\u003cspan class=\"tooltip align-left\"\u003e\u003cspan class=\"tooltip__content\"\u003e\u003cul class=\"price-tooltip\"\u003e\u003cli\u003e\u003cstrong\u003ePrice completeness:\u003c/strong\u003e This price is complete, there are no hidden additional costs.\u003c/li\u003e\u003c/ul\u003e\u003c/span\u003e\u003c/span\u003e\u003c/span\u003e\u003c/span\u003e\u003cspan class=\"duration\"\u003e18 minutes\u003c/span\u003e\u003c/div\u003e\u003cspan class=\"institute-rating rating-score\"\u003e\u003cdiv class=\"product-item__provider--mobile\"\u003e\u003cimg class=\"thumb\" width=\"100\" height=\"50\" alt=\"Logo Khan Academy\" title=\"Logo Khan Academy\" src=\"https://static-3.springest.com/uploads/institute/logo/14442/thumb_khan-academy-dbd7240e8ba3ca82c800ca3db25311a3.png\" /\u003e\u003c/div\u003e\u003c/span\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv class=\"result-item product-item\" id=\"training-434590\"\u003e\u003cdiv class=\"checkbox-wrapper\"\u003e\u003cinput type=\"checkbox\" name=\"training-434590\" id=\"training-434590\" value=\"434590\" class=\"is-hidden compare-list__checkbox compare-checkbox\" /\u003e\u003ci class=\"ma-check_box_outline_blank material-icons checkbox-icon\" data-checked=\"check_box\" data-unchecked=\"check_box_outline_blank\"\u003echeck_box_outline_blank\u003c/i\u003e\u003c/div\u003e\u003cdiv class=\"product-item__thumb\"\u003e\u003ca class=\" track\" data-tracking-events=\"[]\" href=\"/khan-academy/biology-krebs-citric-acid-cycle\"\u003e\u003cdiv class=\"product-image__video-thumbnail-btn small-square\" style=\"background-image: url(https://static-3.springest.com/uploads/product_image/image/59493/thumbnail-unnamed.png)\"\u003e\u003c/div\u003e\u003c/a\u003e\u003c/div\u003e\u003cdiv class=\"product-item__content\"\u003e\u003ch2 class=\"as-h3 product-item__title\"\u003e\u003ca title=\"Video: Biology: Krebs / citric acid cycle\" href=\"/khan-academy/biology-krebs-citric-acid-cycle\"\u003eBiology: Krebs / citric acid cycle\u003c/a\u003e\u003c/h2\u003e\u003cdiv class=\"product-item__details\"\u003e\u003cdiv class=\"product-item__provider\"\u003e\u003cimg class=\"thumb\" width=\"100\" height=\"50\" alt=\"Logo Khan Academy\" title=\"Logo Khan Academy\" src=\"https://static-3.springest.com/uploads/institute/logo/14442/thumb_khan-academy-dbd7240e8ba3ca82c800ca3db25311a3.png\" /\u003e\u003c/div\u003e\u003cdiv class=\"product-item__meta-info starting-dateplaces-container\"\u003e\u003cdiv class=\"meta-info--starting-dateplaces\"\u003e\u003cspan\u003e\u003c/span\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv class=\"product-item__description\"\u003e\u003cdiv class=\"product-item__thumb--mobile\"\u003e\u003ca class=\" track\" data-tracking-events=\"[]\" href=\"/khan-academy/biology-krebs-citric-acid-cycle#product-images\"\u003e\u003cimg class=\"product-image__item\" src=\"https://static-3.springest.com/uploads/product_image/image/59493/thumbnail-unnamed.png\" /\u003e\u003c/a\u003e\u003c/div\u003e\u003cp\u003eOverview of the Krebs or citric acid cycle, which is a series of reactions that takes in acetyl CoA and produces carbon dioxide, NADH, FADH…\u003c/p\u003e\u003c/div\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv class=\"product-item__footer\"\u003e\u003cdiv class=\"product-item__usp-data\"\u003e\u003cspan class=\"method\"\u003eVideo\u003c/span\u003e\u003cspan class=\"price\"\u003eFree\u003cspan class=\"tooltip-parent tooltip-icon  align-left\"\u003e\u003ci 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class=\"checkbox-wrapper\"\u003e\u003cinput type=\"checkbox\" name=\"training-434539\" id=\"training-434539\" value=\"434539\" class=\"is-hidden compare-list__checkbox compare-checkbox\" /\u003e\u003ci class=\"ma-check_box_outline_blank material-icons checkbox-icon\" data-checked=\"check_box\" data-unchecked=\"check_box_outline_blank\"\u003echeck_box_outline_blank\u003c/i\u003e\u003c/div\u003e\u003cdiv class=\"product-item__thumb\"\u003e\u003ca class=\" track\" data-tracking-events=\"[]\" href=\"/khan-academy/biology-introduction-to-amino-acids\"\u003e\u003cdiv class=\"product-image__video-thumbnail-btn small-square\" style=\"background-image: url(https://static-3.springest.com/uploads/product_image/image/59441/thumbnail-unnamed.png)\"\u003e\u003c/div\u003e\u003c/a\u003e\u003c/div\u003e\u003cdiv class=\"product-item__content\"\u003e\u003ch2 class=\"as-h3 product-item__title\"\u003e\u003ca title=\"Video: Biology: Introduction to amino acids\" href=\"/khan-academy/biology-introduction-to-amino-acids\"\u003eBiology: Introduction to amino acids\u003c/a\u003e\u003c/h2\u003e\u003cdiv class=\"product-item__details\"\u003e\u003cdiv class=\"product-item__provider\"\u003e\u003cimg class=\"thumb\" width=\"100\" height=\"50\" alt=\"Logo Khan Academy\" title=\"Logo Khan Academy\" src=\"https://static-3.springest.com/uploads/institute/logo/14442/thumb_khan-academy-dbd7240e8ba3ca82c800ca3db25311a3.png\" /\u003e\u003c/div\u003e\u003cdiv class=\"product-item__meta-info starting-dateplaces-container\"\u003e\u003cdiv class=\"meta-info--starting-dateplaces\"\u003e\u003cspan\u003e\u003c/span\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv class=\"product-item__description\"\u003e\u003cdiv class=\"product-item__thumb--mobile\"\u003e\u003ca class=\" track\" data-tracking-events=\"[]\" href=\"/khan-academy/biology-introduction-to-amino-acids#product-images\"\u003e\u003cimg class=\"product-image__item\" src=\"https://static-3.springest.com/uploads/product_image/image/59441/thumbnail-unnamed.png\" /\u003e\u003c/a\u003e\u003c/div\u003e\u003cp\u003eAmino acids and the central dogma of molecular biology. Amino and carboxyl groups, side chains, and zwitterions. Biology Life is beautiful!…\u003c/p\u003e\u003c/div\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv class=\"product-item__footer\"\u003e\u003cdiv class=\"product-item__usp-data\"\u003e\u003cspan class=\"method\"\u003eVideo\u003c/span\u003e\u003cspan class=\"price\"\u003eFree\u003cspan class=\"tooltip-parent tooltip-icon  align-left\"\u003e\u003ci class=\"ma-check material-icons \"\u003echeck\u003c/i\u003e\u003cspan class=\"tooltip align-left\"\u003e\u003cspan class=\"tooltip__content\"\u003e\u003cul class=\"price-tooltip\"\u003e\u003cli\u003e\u003cstrong\u003ePrice completeness:\u003c/strong\u003e This price is complete, there are no hidden additional costs.\u003c/li\u003e\u003c/ul\u003e\u003c/span\u003e\u003c/span\u003e\u003c/span\u003e\u003c/span\u003e\u003cspan class=\"duration\"\u003e10 minutes\u003c/span\u003e\u003c/div\u003e\u003cspan class=\"institute-rating rating-score\"\u003e\u003cdiv class=\"product-item__provider--mobile\"\u003e\u003cimg class=\"thumb\" width=\"100\" height=\"50\" alt=\"Logo Khan Academy\" title=\"Logo Khan Academy\" src=\"https://static-3.springest.com/uploads/institute/logo/14442/thumb_khan-academy-dbd7240e8ba3ca82c800ca3db25311a3.png\" /\u003e\u003c/div\u003e\u003c/span\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv class=\"result-item product-item\" id=\"training-434764\"\u003e\u003cdiv class=\"checkbox-wrapper\"\u003e\u003cinput type=\"checkbox\" name=\"training-434764\" id=\"training-434764\" value=\"434764\" class=\"is-hidden compare-list__checkbox compare-checkbox\" /\u003e\u003ci class=\"ma-check_box_outline_blank material-icons checkbox-icon\" data-checked=\"check_box\" data-unchecked=\"check_box_outline_blank\"\u003echeck_box_outline_blank\u003c/i\u003e\u003c/div\u003e\u003cdiv class=\"product-item__thumb\"\u003e\u003ca class=\" track\" data-tracking-events=\"[]\" href=\"/khan-academy/biology-great-glands-your-endocrine-system\"\u003e\u003cdiv class=\"product-image__video-thumbnail-btn small-square\" style=\"background-image: url(https://static-3.springest.com/uploads/product_image/image/59672/thumbnail-unnamed.png)\"\u003e\u003c/div\u003e\u003c/a\u003e\u003c/div\u003e\u003cdiv class=\"product-item__content\"\u003e\u003ch2 class=\"as-h3 product-item__title\"\u003e\u003ca title=\"Video: Biology: Great glands - Your endocrine system\" href=\"/khan-academy/biology-great-glands-your-endocrine-system\"\u003eBiology: Great glands - Your endocrine system\u003c/a\u003e\u003c/h2\u003e\u003cdiv class=\"product-item__details\"\u003e\u003cdiv class=\"product-item__provider\"\u003e\u003cimg class=\"thumb\" width=\"100\" height=\"50\" alt=\"Logo Khan Academy\" title=\"Logo Khan Academy\" src=\"https://static-3.springest.com/uploads/institute/logo/14442/thumb_khan-academy-dbd7240e8ba3ca82c800ca3db25311a3.png\" /\u003e\u003c/div\u003e\u003cdiv class=\"product-item__meta-info starting-dateplaces-container\"\u003e\u003cdiv class=\"meta-info--starting-dateplaces\"\u003e\u003cspan\u003e\u003c/span\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv class=\"product-item__description\"\u003e\u003cdiv class=\"product-item__thumb--mobile\"\u003e\u003ca class=\" track\" data-tracking-events=\"[]\" href=\"/khan-academy/biology-great-glands-your-endocrine-system#product-images\"\u003e\u003cimg class=\"product-image__item\" src=\"https://static-3.springest.com/uploads/product_image/image/59672/thumbnail-unnamed.png\" /\u003e\u003c/a\u003e\u003c/div\u003e\u003cp\u003eHank fills us in on the endocrine system - the system of glands which produce and secrete different types of hormones directly into the blo…\u003c/p\u003e\u003c/div\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv class=\"product-item__footer\"\u003e\u003cdiv class=\"product-item__usp-data\"\u003e\u003cspan class=\"method\"\u003eVideo\u003c/span\u003e\u003cspan class=\"price\"\u003eFree\u003cspan class=\"tooltip-parent tooltip-icon  align-left\"\u003e\u003ci class=\"ma-check material-icons \"\u003echeck\u003c/i\u003e\u003cspan class=\"tooltip align-left\"\u003e\u003cspan class=\"tooltip__content\"\u003e\u003cul class=\"price-tooltip\"\u003e\u003cli\u003e\u003cstrong\u003ePrice completeness:\u003c/strong\u003e This price is complete, there are no hidden additional costs.\u003c/li\u003e\u003c/ul\u003e\u003c/span\u003e\u003c/span\u003e\u003c/span\u003e\u003c/span\u003e\u003cspan class=\"duration\"\u003e11 minutes\u003c/span\u003e\u003c/div\u003e\u003cspan class=\"institute-rating rating-score\"\u003e\u003cdiv class=\"product-item__provider--mobile\"\u003e\u003cimg class=\"thumb\" width=\"100\" height=\"50\" alt=\"Logo Khan Academy\" title=\"Logo Khan Academy\" src=\"https://static-3.springest.com/uploads/institute/logo/14442/thumb_khan-academy-dbd7240e8ba3ca82c800ca3db25311a3.png\" /\u003e\u003c/div\u003e\u003c/span\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv class=\"result-item product-item\" id=\"training-434659\"\u003e\u003cdiv class=\"checkbox-wrapper\"\u003e\u003cinput type=\"checkbox\" name=\"training-434659\" id=\"training-434659\" value=\"434659\" class=\"is-hidden compare-list__checkbox compare-checkbox\" /\u003e\u003ci class=\"ma-check_box_outline_blank material-icons checkbox-icon\" data-checked=\"check_box\" data-unchecked=\"check_box_outline_blank\"\u003echeck_box_outline_blank\u003c/i\u003e\u003c/div\u003e\u003cdiv class=\"product-item__thumb\"\u003e\u003ca class=\" track\" data-tracking-events=\"[]\" href=\"/khan-academy/biology-earth-formation\"\u003e\u003cdiv class=\"product-image__video-thumbnail-btn small-square\" style=\"background-image: url(https://static-3.springest.com/uploads/product_image/image/59565/thumbnail-unnamed.png)\"\u003e\u003c/div\u003e\u003c/a\u003e\u003c/div\u003e\u003cdiv class=\"product-item__content\"\u003e\u003ch2 class=\"as-h3 product-item__title\"\u003e\u003ca title=\"Video: Biology: Earth formation\" href=\"/khan-academy/biology-earth-formation\"\u003eBiology: Earth formation\u003c/a\u003e\u003c/h2\u003e\u003cdiv class=\"product-item__details\"\u003e\u003cdiv class=\"product-item__provider\"\u003e\u003cimg class=\"thumb\" width=\"100\" height=\"50\" alt=\"Logo Khan Academy\" title=\"Logo Khan Academy\" src=\"https://static-3.springest.com/uploads/institute/logo/14442/thumb_khan-academy-dbd7240e8ba3ca82c800ca3db25311a3.png\" /\u003e\u003c/div\u003e\u003cdiv class=\"product-item__meta-info starting-dateplaces-container\"\u003e\u003cdiv class=\"meta-info--starting-dateplaces\"\u003e\u003cspan\u003e\u003c/span\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv class=\"product-item__description\"\u003e\u003cdiv class=\"product-item__thumb--mobile\"\u003e\u003ca class=\" track\" data-tracking-events=\"[]\" href=\"/khan-academy/biology-earth-formation#product-images\"\u003e\u003cimg class=\"product-image__item\" src=\"https://static-3.springest.com/uploads/product_image/image/59565/thumbnail-unnamed.png\" /\u003e\u003c/a\u003e\u003c/div\u003e\u003cp\u003eEarth ​was formed approximately 4.6 billion years ago, likely as the result of a supernova (star explosion). 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class=\"pagination__item hide-on-small\"\u003e\u003ca class=\"pagination__link\" data-link-type=\"pagination\" title=\"Page 3\" href=\"/sciences/biology/video/3\"\u003e3\u003c/a\u003e\u003c/li\u003e\u003cli class=\"pagination__item hide-on-small\"\u003e\u003ca class=\"pagination__link\" data-link-type=\"pagination\" title=\"Page 4\" href=\"/sciences/biology/video/4\"\u003e4\u003c/a\u003e\u003c/li\u003e\u003cli class=\"pagination__item hide-on-small\"\u003e\u003ca class=\"pagination__link\" data-link-type=\"pagination\" title=\"Page 5\" href=\"/sciences/biology/video/5\"\u003e5\u003c/a\u003e\u003c/li\u003e\u003cli class=\"pagination__item hide-on-small\"\u003e\u003ca class=\"pagination__link\" data-link-type=\"pagination\" title=\"Page 6\" href=\"/sciences/biology/video/6\"\u003e6\u003c/a\u003e\u003c/li\u003e\u003cli class=\"pagination__item hide-on-small\"\u003e\u003ca class=\"pagination__link\" data-link-type=\"pagination\" title=\"Page 7\" 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Let us know!\u003c/p\u003e\u003ca class=\"button--link\" href=\"/qa-submit\"\u003eAsk a question\u003c/a\u003e\u003c/div\u003e\u003cdiv class=\"panel__footer\"\u003e\u003ca class=\"panel__footer-link\" href=\"/questions/sciences\"\u003eView all Sciences questions\u003c/a\u003e\u003c/div\u003e\u003c/div\u003e\u003c/section\u003e\u003csection class=\"aside__section learning-trends\"\u003e\u003cdiv class=\"panel with-border learning-trends\"\u003e\u003cdiv class=\"panel__heading\"\u003e\u003cdiv class=\"as-h3 panel__heading-title--aside\"\u003eLearning Trends\u003c/div\u003e\u003cabbr class=\"item fn\" title=\"Biology\"\u003e\u003c/abbr\u003e\u003c/div\u003e\u003cdiv class=\"panel__content\"\u003e\u003cul class=\"trends-list\"\u003e\u003cli class=\"trends-list__item with-products\"\u003e\u003cstrong\u003e355\u003c/strong\u003e Courses\u003c/li\u003e\u003cli class=\"trends-list__item with-providers\"\u003e\u003cstrong\u003e13\u003c/strong\u003e Training Providers\u003c/li\u003e\u003cli class=\"trends-list__item with-price\"\u003e\u003cstrong class=\"pricerange\"\u003e$81.82 - $830.-\u003c/strong\u003e Price range\u003c/li\u003e\u003c/ul\u003e\u003c/div\u003e\u003c/div\u003e\u003c/section\u003e\u003c/aside\u003e\u003c/div\u003e"},"tracking":[{"event":"[viewed] Subject page","data":{"distinct_id":null,"time":"2026-04-06T08:37:38.724Z","subject_id":2233,"subject_name":"Biology","category_name":"Sciences","filter_size":1,"filter_types":["location"],"filters":["video"],"page":1,"manually_filtered":false,"money_back_guarantee_count":0,"autosuggest":null,"funnel_search_subject_box":true,"ab_050_mobile_subject_cta":"button_variation"}},{"event":"[filtered] Subject page","data":{"distinct_id":null,"time":"2026-04-06T08:37:38.724Z","subject_id":2233,"subject_name":"Biology","category_name":"Sciences","filter_size":1,"filter_types":["location"],"filters":["video"],"page":1,"manually_filtered":false,"money_back_guarantee_count":0,"autosuggest":null,"funnel_search_subject_box":true,"ab_050_mobile_subject_cta":"button_variation"}}],"filters":"/video"}