https://www.khanacademy.org/science/hs-bio/x230b3ff252126bb6:biodiversity-and-human-impacts/x230b3ff252126bb6:biodiversity/v/biodiversity 2024-05-08T17:59:40.799210289Z Biodiversity Biodiversity encompasses genetic, species, and ecosystem diversity. Biodiversity is dynamic and changes over time, influenced by speciation and extinction events. However, human actions—such as climate change and overexploitation—are increasing extinction rates. As extinction rates increase, ecosystems experience a loss in biodiversity. Khan Academy video https://cdn.kastatic.org/ka_thumbnails_cache/238e0cd1-b6f5-4aa3-aa56-5cab1b704c2e_1280_720_base.png Biodiversity Biodiversity encompasses genetic, species, and ecosystem diversity. Biodiversity is dynamic and changes over time, influenced by speciation and extinction events. However, human actions—such as climate change and overexploitation—are increasing extinction rates. As extinction rates increase, ecosystems experience a loss in biodiversity. https://cdn.kastatic.org/ka-youtube-converted/TZ-S9sc6HYM.mp4/TZ-S9sc6HYM.mp4 471 Forest: components and its role in climate https://www.khanacademy.org/science/ap-biology/ecology-ap/biodiversity/v/exploring-ecosystems-tropical-rainforest-diversity-california-academy-of-sciences 2023-07-06T18:33:28.586154171Z Tropical rainforest diversity Tropical rainforests are among the most diverse, energy-rich ecosystems on the planet and host a vast array of species within distinct vertical layers. Researchers study these ecosystems' structure and diversity; each , focusing on species richness and evenness. Diverse ecological communities are more stable and resilient, helping rainforests adapt to disturbances like deforestation and climate change. Unraveling the mysteries of tropical rainforests can aid in their conservation. video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Tropical rainforest diversity Tropical rainforests are among the most diverse, energy-rich ecosystems on the planet and host a vast array of species within distinct vertical layers. Researchers study these ecosystems' structure and diversity; each , focusing on species richness and evenness. Diverse ecological communities are more stable and resilient, helping rainforests adapt to disturbances like deforestation and climate change. Unraveling the mysteries of tropical rainforests can aid in their conservation. https://cdn.kastatic.org/ka-youtube-converted/LHPuo0rwM1w.mp4/LHPuo0rwM1w.mp4 244 Forest: components and its role in climate https://www.khanacademy.org/science/ap-biology/natural-selection/extinction/v/biodiversity-and-extinction-then-and-now 2023-06-22T09:47:49.118446933Z Biodiversity and extinction, then and now Extinctions may occur because of direct, natural phenomena or the inability of species to adapt quickly enough to changing environmental conditions or ecological interactions. Five major mass extinctions have happened on Earth. A sixth mass extinction is currently underway and is driven by human activity, which underscores the need to learn from the past to safeguard our future. video https://cdn.kastatic.org/googleusercontent/gXJgcpcD6uIuj2YNFQZl-XWJW0N46gwbOulhkBenXd75Wk9snjQuLyT-qz1NRqYgjyVRx_AUMWUKgBhGqsO4hHxAMQ Biodiversity and extinction, then and now Extinctions may occur because of direct, natural phenomena or the inability of species to adapt quickly enough to changing environmental conditions or ecological interactions. Five major mass extinctions have happened on Earth. A sixth mass extinction is currently underway and is driven by human activity, which underscores the need to learn from the past to safeguard our future. https://cdn.kastatic.org/ka-youtube-converted/v8PPsI0LqOY.mp4/v8PPsI0LqOY.mp4 742 Forest: components and its role in climate https://www.khanacademy.org/science/kn-class-7-science/x2edacdad2354c760:forests-our-lifeline/x2edacdad2354c760:forest-components-and-activities/v/climate-and-adaptation-in-tropical-rainforest 2025-08-06T20:12:18.72095169Z Climate and adaptation in Tropical rainforest Dive into the fascinating world of tropical rainforests! In this video, explore how animals like frogs, monkeys, toucans, and elephants have adapted to survive in hot, humid jungles. Shankar Nair video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Climate and adaptation in Tropical rainforest Dive into the fascinating world of tropical rainforests! In this video, explore how animals like frogs, monkeys, toucans, and elephants have adapted to survive in hot, humid jungles. https://cdn.kastatic.org/ka-youtube-converted/R_9R5_JFSFA.mp4/R_9R5_JFSFA.mp4 271 Forest: components and its role in climate https://www.khanacademy.org/science/bmc-grade-7-science/x2dc8db125f483583:properties-of-natural-resources/x2dc8db125f483583:human-impacts-on-sustainability/v/earths-changing-climate0in 2025-07-09T07:55:11.377063168Z Earth's changing climate Let's learn about Earth's changing climate Skyloom (Dubbing) video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Earth's changing climate Let's learn about Earth's changing climate https://cdn.kastatic.org/ka-youtube-converted/3hDAQxKU8UQ.mp4/3hDAQxKU8UQ.mp4 331 Forest: components and its role in climate https://www.khanacademy.org/science/kn-class-7-science/x2edacdad2354c760:forests-our-lifeline/x2edacdad2354c760:forest-components-and-activities/e/forests-and-our-climate 2025-10-06T13:00:43.565068281Z Forests and our climate Explore how forests support life, regulate climate, and what happens when they disappear—covering oxygen balance, rainfall, floods, and conservation of green lungs. Yajurva Joshi exercise