https://www.khanacademy.org/science/grade-6-science-tx/x6eddf2e1c524bf5a:interactions-in-ecosystems/x6eddf2e1c524bf5a:ecological-interactions-tx/v/ecological-interactions-tx 2026-06-30T17:20:49.845080165Z Ecological interactions Ecological interactions explain how organisms share limited resources in ecosystems. Competition, predation, herbivory, and symbioses (such as mutualism, commensalism, and parasitism) all affect survival and population size. Different strategies (such as using resources in different ways) allow many species to live together in various ecosystems. Mahesh Shenoy video https://cdn.kastatic.org/ka_thumbnails_cache/9a85580c-66f6-4116-853c-4edc367d3adb_1280_720_base.png Ecological interactions Ecological interactions explain how organisms share limited resources in ecosystems. Competition, predation, herbivory, and symbioses (such as mutualism, commensalism, and parasitism) all affect survival and population size. Different strategies (such as using resources in different ways) allow many species to live together in various ecosystems. https://cdn.kastatic.org/ka-youtube-converted/wFntJ0V5oA4.mp4/wFntJ0V5oA4.mp4 547 Ecological interactions https://www.khanacademy.org/science/grade-6-science-tx/x6eddf2e1c524bf5a:interactions-in-ecosystems/x6eddf2e1c524bf5a:ecological-interactions-tx/a/ecological-interactions-tx 2026-06-30T17:20:49.845080165Z Learn and try: Ecological interactions Learn about ecological interactions, including competition, predation (and herbivory), and symbioses (mutualism, commensalism, and parasitism). article https://www.khanacademy.org/science/grade-6-science-tx/x6eddf2e1c524bf5a:interactions-in-ecosystems/x6eddf2e1c524bf5a:ecological-interactions-tx/e/understand-ecological-interactions-tx 2026-06-30T17:20:49.845080165Z Understand: Ecological interactions Check your understanding of ecological interactions 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:ecological-interactions-tx/e/apply-ecological-interactions-tx 2026-06-30T17:20:49.845080165Z Apply: Ecological interactions Apply your understanding of ecological interactions in this set of free, standards-aligned practice questions. Wieteke Holthuijzen exercise