https://www.khanacademy.org/science/ap-biology/ecology-ap/community-ecology/a/interactions-in-communities 2024-01-22T05:31:37.90910307Z Interactions in communities Overview of competition, predation, herbivory, mutualism, commensalism, and parasitism. article https://www.khanacademy.org/science/how-we-interact-with-our-environment/x049400914d70a1b7:organisms-and-populations/x049400914d70a1b7:population-interactions/e/population-interactions 2024-08-15T05:49:18.690921017Z Population interactions Predation, commensalism, mutualism, parasitism, competition, amensalism mahathi exercise https://www.khanacademy.org/science/ms-biology/x0c5bb03129646fd6:interactions-in-ecosystems/x0c5bb03129646fd6:ecological-interactions/v/competition-predation-and-mutualism 2022-10-21T22:40:33.613234713Z Competition, predation, and mutualism Predatory interactions may reduce the number of organisms or eliminate whole populations of organisms. Mutually beneficial interactions, in contrast, may become so interdependent that each organism requires the other for survival. Although the species involved in competitive, predatory, and mutually beneficial interactions vary across ecosystems, the patterns of interactions of organisms with their environments, both living and nonliving, are shared. Sal Khan video https://cdn.kastatic.org/ka_thumbnails_cache/ccfe58b0-38c1-43b9-b3bd-ffec29e6256b_1280_720_base.png Competition, predation, and mutualism Predatory interactions may reduce the number of organisms or eliminate whole populations of organisms. Mutually beneficial interactions, in contrast, may become so interdependent that each organism requires the other for survival. Although the species involved in competitive, predatory, and mutually beneficial interactions vary across ecosystems, the patterns of interactions of organisms with their environments, both living and nonliving, are shared. https://cdn.kastatic.org/ka-youtube-converted/S65RR_pEyPw.mp4/S65RR_pEyPw.mp4 190 Ecosystem https://www.khanacademy.org/science/biology/ecology/intro-to-ecology/v/ecology-introduction 2024-01-22T05:31:37.90910307Z Ecology introduction Ecology studies how life interacts with other life and their environment, focusing on both living (biotic) and non-living (abiotic) factors. It explores different scales, from individual organisms to populations, communities, ecosystems, and the biosphere. Each level offers unique insights into the complex, often balanced systems that form our world. Ecology also considers potential biospheres beyond Earth. Sal Khan video https://cdn.kastatic.org/googleusercontent/O4k8YUHqHveXQCpe_S5aKD6CJVBtEqIC7-5wGkOGArzdfopMoLqzjoPvhAHZNQ-JWdJj32BbUmqA8rJFjfcv_AxLEw Ecology introduction Ecology studies how life interacts with other life and their environment, focusing on both living (biotic) and non-living (abiotic) factors. It explores different scales, from individual organisms to populations, communities, ecosystems, and the biosphere. Each level offers unique insights into the complex, often balanced systems that form our world. Ecology also considers potential biospheres beyond Earth. https://cdn.kastatic.org/ka-youtube-converted/OfV3VNgjpvw.mp4/OfV3VNgjpvw.mp4 589 Ecosystem https://www.khanacademy.org/science/cambridge-o-level-biology-cie/x2a084a90105205d2:relationships-of-organisms-with-one-another-and-with-the-environment/x2a084a90105205d2:ecosystems-and-biodiversity/e/intro-to-ecology 2026-04-08T00:54:09.631945657Z Intro to ecology Test your knowledge on the basics of ecology! Ashley exercise https://www.khanacademy.org/science/6th-grade-science-matatag/x1c42f0f13f909d5b:2nd-quarter/x1c42f0f13f909d5b:ecosystem/e/hs-introduction-to-ecology 2021-04-29T08:03:20Z Introduction to ecology Test your knowledge on the basics of ecology! Ashley exercise https://www.khanacademy.org/science/biology/ecology/community-ecosystem-ecology/a/ecological-interactions 2025-06-30T13:17:39.587845569Z Ecological interactions 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 Ecosystem