https://www.khanacademy.org/science/grade-6-science-tx/x6eddf2e1c524bf5a:interactions-in-ecosystems 2026-06-30T21:40:41.000025973Z Interactions in ecosystems Examine how organisms and populations are organized within ecosystems and how they depend on biotic and abiotic factors to survive. Learn about the range of ecological relationships between organisms, including predation, competition, and symbioses. unit