All of the ecosystems on Earth are powered by _____.

Animals rely on _____ for food and oxygen.

A(n) _____ shows many connected feeding relationships in an ecosystem.

As energy is transferred from one trophic level to the next, energy _____.

Which is NOT a way that prey defends itself against predators?

The living parts of an environment are called the _____.

Organisms that make their own food are called _____.

The nonliving parts of an environment are called _____.

The place an organism lives in the environment is its _____.

A _____ always starts with a producer and ends witha consumer.

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