One way to help the environment is to _____________ our use of certian products.

Two animals that fight for the same food source is an example of what?

The st. Helena Olive tree became __________ because of disease and dry weather.

When harmful materials damage teh air, water, or land this is called __________.

Sunlight and air are ___________ that help an organism survive.

The remains of organisms that lived long ago are ______________.

When only a few of an organism are left, it is __________________.

All the eagles in an ecosystem make up a(n) ______________.

A person can ___________ an old tire by turning it into a tire swing.

Heavy rains and other storms can cause a(n) _____________________.

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