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Chapter 3

Key Vocabulary

TermDefinition
ecosystem The living and nonliving things in an environment and all their interactions.
habitat The home of an organism.
population All of the members of a single type of organism in an ecosystem.
community All the populations in an ecosystem.
producer An organism such as a plant that makes food.
consumer An organisms that cannot make its own food.
herbivore Animals that eat only producers.
carnivore Animals that eat herbivores and omnivores.
omnivore Animals that eat producers and consumers.
decomposer An organism that breaks down wastes and the remains of other organisms into simpler substances.
food chain The path that energy takes from one organism to another in the form of food.
food web The food chains that overlap in an ecosystem.
energy pyramid a diagram that shows how energy is used in an ecosystem
predator A carnivore that hunts for its food.
prey Organism that gets hunted by predators.
Created by: abelile
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