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the study of the interactions of living organisms with one another and with their environment

trophic level

an organisms relative position in a sequence of energy trnasfers in a food chain


organism that can capture energy from sunlight or chemicals and use it to produce food from inorganic compounds; also called an autotroph


an organism that obtains energy by feeding on other organisms


an animal that eats both plants and animals


organism that obtains energy by eating only plants


Meat eater


organism that breaks down the wastes or remains of other organisms


a relationship between two species in which both species benefit


animal that hunts and eats other animals


animal hunted or caught for food


an animal or plant that lives in or on a host (another animal or plant)


an animal or plant that nourishes and supports a parasite


(ecology) the status of an organism within its environment and community (affecting its survival as a species)


a system formed by the interaction of a community of organisms with their physical environment

food web

(ecology) a community of organisms where there are several interrelated food chains

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