https://www.khanacademy.org/science/grade-7-science-cambridge-curriculum/x754b285620daf71e:ecosystems/x754b285620daf71e:balance-in-ecosystem/v/balance-in-an-ecosystem-ecosystems 2026-04-30T07:30:36.209464894Z Balance in an Ecosystem - Ecosystems Balance in an Ecosystem Khan Academy Pakistan video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Balance in an Ecosystem - Ecosystems Balance in an Ecosystem https://cdn.kastatic.org/ka-youtube-converted/TF2URfnU1pE.mp4/TF2URfnU1pE.mp4 206 Balance in ecosystem https://www.khanacademy.org/science/ms-biology/x0c5bb03129646fd6:ecosystems-and-biodiversity/x0c5bb03129646fd6:biodiversity-and-ecosystem-health/a/biodiversity-and-ecosystem-health 2026-04-26T16:30:39.382257956Z Key points: Biodiversity and ecosystem health Learn about the connections between biodiversity and ecosystem health. article https://www.khanacademy.org/science/hs-bio/x230b3ff252126bb6:biodiversity-and-human-impacts/x230b3ff252126bb6:humans-and-biodiversity/a/biodiversity-loss-and-extinction 2026-04-26T16:30:39.382257956Z Learn: Biodiversity loss and extinction Learn about biodiversity loss and extinction. article https://www.khanacademy.org/science/ap-biology/ecology-ap/disruptions-to-ecosystems/v/introduced-species-and-biodiversity 2023-06-22T09:47:49.118446933Z Introduced species and biodiversity Introduced species, also known as exotic species, can disrupt ecosystems and harm native species. While some introduced species benefit humans and native species, invasive species outcompete natives, causing ecological damage. Invasive species often lack natural predators and can introduce diseases, parasites, and pathogens. It is important to recognize and mitigate the impact of invasive species on ecosystems to preserve biodiversity and maintain healthy ecological functions. California Academy of Sciences video https://cdn.kastatic.org/googleusercontent/YAfumdqpkEa2m5KjSHwj99JO7D9dW_veuMQXu50IOyEjVCTHeXjJdIrv2ejgzxR5Gn8pLZayvodqQFRNbE2tEUE Introduced species and biodiversity Introduced species, also known as exotic species, can disrupt ecosystems and harm native species. While some introduced species benefit humans and native species, invasive species outcompete natives, causing ecological damage. Invasive species often lack natural predators and can introduce diseases, parasites, and pathogens. It is important to recognize and mitigate the impact of invasive species on ecosystems to preserve biodiversity and maintain healthy ecological functions. https://cdn.kastatic.org/ka-youtube-converted/J-ftiWffNTc.mp4/J-ftiWffNTc.mp4 596 Balance in ecosystem https://www.khanacademy.org/science/ap-biology/ecology-ap/disruptions-to-ecosystems/a/invasive-species 2021-04-29T07:56:38Z Invasive species What causes a species to be considered invasive. How invasive species can damage ecological communities. article https://www.khanacademy.org/science/ap-college-environmental-science/x0b0e430a38ebd23f:global-change/x0b0e430a38ebd23f:human-impact-on-species/a/endangered-species-conservation 2024-08-05T20:38:08.513637776Z Endangered species conservation Review your understanding of endangered species conservation with this free article aligned to AP standards. article https://www.khanacademy.org/science/hs-bio/x230b3ff252126bb6:biodiversity-and-human-impacts/x230b3ff252126bb6:humans-and-biodiversity/a/threats-to-biodiversity 2026-04-26T16:30:39.382257956Z Learn: Threats to biodiversity Learn about threats to biodiversity and ecosystems. article https://www.khanacademy.org/science/ap-college-environmental-science/x0b0e430a38ebd23f:global-change/x0b0e430a38ebd23f:human-impact-on-species/a/why-species-become-endangered 2024-08-05T20:38:08.513637776Z Why species become endangered Review your understanding of endangered species with this free article aligned to AP standards. article https://www.khanacademy.org/science/hs-bio/x230b3ff252126bb6:biodiversity-and-human-impacts/x230b3ff252126bb6:humans-and-biodiversity/v/human-impacts-on-ecosystems-video 2022-09-24T04:45:13.131282509Z Human impacts on ecosystems Anthropogenic changes (induced by human activity) in the environment—including habitat destruction, pollution, introduction of invasive species, overexploitation, and climate change—can disrupt an ecosystem and threaten the survival of some species. Sal Khan video https://cdn.kastatic.org/ka_thumbnails_cache/b1089156-0a34-4c68-b45e-9796f88b7fe9_1280_720_base.png Human impacts on ecosystems Anthropogenic changes (induced by human activity) in the environment—including habitat destruction, pollution, introduction of invasive species, overexploitation, and climate change—can disrupt an ecosystem and threaten the survival of some species. https://cdn.kastatic.org/ka-youtube-converted/K10qnzCYH54.mp4/K10qnzCYH54.mp4 336 Balance in ecosystem https://www.khanacademy.org/science/grade-7-science-cambridge-curriculum/x754b285620daf71e:ecosystems/x754b285620daf71e:balance-in-ecosystem/e/human-activities-and-species-that-threaten-biodiversity 2025-12-07T04:30:37.281763145Z Human activities and species that threaten biodiversity This exercise helps you understand major threats to biodiversity by analyzing short scenarios. You identify how fragmentation, over-exploitation, invasive species and co-extinctions directly cause species declines. Khan Academy exercise