https://www.khanacademy.org/science/ms-biology/x0c5bb03129646fd6:interactions-in-ecosystems/x0c5bb03129646fd6:populations-communities-and-ecosystems/v/ms-populations-communities-and-ecosystems 2022-10-21T22:40:33.613234713Z Populations, communities, and ecosystems Organisms, and populations of organisms, are dependent on their environmental interactions both with other living things and with nonliving factors. Sal Khan video https://cdn.kastatic.org/ka_thumbnails_cache/5672b967-c8cc-46f0-ba8b-431eb788378e_1280_720_base.png Populations, communities, and ecosystems Organisms, and populations of organisms, are dependent on their environmental interactions both with other living things and with nonliving factors. https://cdn.kastatic.org/ka-youtube-converted/xzINev2Bd8s.mp4/xzINev2Bd8s.mp4 226 What is Ecosystem?