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producer

An organism that can make its own food.
consumer

An organism that obtains energy by feeding on other organisms.
herbivore

A consumer that eats only plants.
carnivore

A consumer that eats only animals.
omnivore

a consumer that eats both plants and animals.
scavenger

A carnivore that feeds on the bodies of dead organisms
decomposer

An organism that breaks down wastes and dead organisms
food chain
.

A series of events in which one organism eats another and obtains energy.
food web

The pattern of overlapping food chains in an ecosystem.
energy pyramid

A diagram that shows the amount of energy that moves from one feeding level to another in a food web.