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food chain

(ecology) a community of organisms where each member is eaten in turn by another member

decomposer organisms

produce enzymes that break down proteins, starches, lipids, and almost every other known organic substance

food web

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

ecologic pyramid

See trophic pyramid.


plant eater


any animal that feeds on flesh


an organism that lives in or on another organism, deriving nourishment at the expense of its host, usually without killing it


the total mass of living matter in a given unit area


an animal that feeds on both animal and vegetable substances


An animal thats eats another animal


animal hunted or caught for food

independent organism

An organism that exists without the aid of other members of the same species

animal society

is a group of related animals of the same species that interact closely and often cooperate with one another.

social insect

an insect that lives in a large community, such as an ant or a bee


the act of competing as for profit or a prize


the relation between two different kinds of organisms when one receives benefits from the other without damaging it


any animal that feeds on refuse and other decaying organic matter


plant that derives moisture and nutrients from the air and rain


a change or alteration in form or qualities

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