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A grouping of the same species in a certain area Using general characteristics of a small group to identify characteristics of a larger group Abiotic: Nonliving things or factors that can affect living organisms – temperature, rain, oceans… Biotic: Living organisms or factors – plants, animals A key used to identify a species by its traits A level at which a species feeds Autotrophs: Species that make or produce their own food – plants, algae Heterotrophs: Organisms that feed at multiple trophic levels – animals, fungi Oh my gosh I’m a heterotroph! Producers: The organisms that provide energy to an ecosystem Consumers: Organisms that consume energy from other organisms Herbivores: Organisms that only eat plants Carnivores: Organisms that only eat meat Omnivores: Organisms that eat meats and plants Organisms responsible for returning nutrients to the ecosystem – bacteria, fungi, mold Display of specific energy transfers between organisms Shows all the possible food chains in an ecosystem Relationship between two organisms Commensalism: Form of symbiosis where one organism benefits and the other is neither benefited or harmed Mutualism: Both organisms benefit Parasitism: One organism benefits and the other is harmed