44.1A: Introduction to Ecology - Biology LibreTexts
https://bio.libretexts.org:443/Bookshelves/Introductory_and_General_Biology/Book%3A_General_Biology_(Boundless)/44%3A_Ecology_and_the_Biosphere/44.01%3A_The_Scope_of_Ecology/44.1A%3A_Introduction_to_Ecology
WebOct 31, 2023 · Key Points. In ecology, ecosystems are composed of organisms, the communities they comprise, and the non-living aspects of their environment. The four main levels of study in ecology are the organism, population, community, and ecosystem.
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