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 Populations, communities, and ecosystems https://www.khanacademy.org/science/grade-6-science-tx/x6eddf2e1c524bf5a:interactions-in-ecosystems/x6eddf2e1c524bf5a:populations-communities-and-ecosystems-tx/v/biotic-and-abiotic-factors 2026-06-30T17:20:49.845080165Z Biotic and abiotic factors Understand how living (biotic) and non-living (abiotic) factors shape ecosystems and determine where organisms can survive. Explore examples such as plants, animals, water, sunlight, and temperature, and see how these factors interact, limit resources, and drive competition in ecosystems. Mahesh Shenoy video https://cdn.kastatic.org/ka_thumbnails_cache/33ef3235-d3e4-41d8-9790-a31974a6970e_1280_720_base.png Biotic and abiotic factors Understand how living (biotic) and non-living (abiotic) factors shape ecosystems and determine where organisms can survive. Explore examples such as plants, animals, water, sunlight, and temperature, and see how these factors interact, limit resources, and drive competition in ecosystems. https://cdn.kastatic.org/ka-youtube-converted/rwCqIYc6FLc.mp4/rwCqIYc6FLc.mp4 298 Populations, communities, and ecosystems https://www.khanacademy.org/science/grade-6-science-tx/x6eddf2e1c524bf5a:interactions-in-ecosystems/x6eddf2e1c524bf5a:populations-communities-and-ecosystems-tx/a/populations-communities-and-ecosystems-tx 2026-06-30T17:20:49.845080165Z Learn and try: Populations, communities, and ecosystems Learn how organisms depend on biotic and abiotic factors, and how scientists use levels of organization to understand the environment. article https://www.khanacademy.org/science/grade-6-science-tx/x6eddf2e1c524bf5a:interactions-in-ecosystems/x6eddf2e1c524bf5a:populations-communities-and-ecosystems-tx/e/understand-populations-communities-and-ecosystems 2026-06-30T17:20:49.845080165Z Understand: Populations, communities, and ecosystems Check your understanding of populations, communities, and ecosystems as well as biotic and abiotic factors in this set of free, standards-aligned practice questions. Wieteke Holthuijzen exercise https://www.khanacademy.org/science/grade-6-science-tx/x6eddf2e1c524bf5a:interactions-in-ecosystems/x6eddf2e1c524bf5a:populations-communities-and-ecosystems-tx/e/apply-populations-communities-and-ecosystems-tx 2026-06-30T17:20:49.845080165Z Apply: Populations, communities, and ecosystems Apply your understanding of populations, communities, and ecosystems in this set of free, standards-aligned practice questions. Wieteke Holthuijzen exercise