A specific physical characteristic that allows a living thing to survive in its environment; ex: hooves, webbed feet

animals that are hunted

organisms that make their own food

A change in an organism’s body structure over time to enable it to survive in its environment

the job of a physical characteristic that an animal has that helps it to survive in its environment

consumers that break down the tissues of dead organisms

The contest among organisms for the limited resources of an ecosystem

too many animals of a certain species living in a certain area

animals that hunt other animals

an organism in a community that must eat to get the energy it needs

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