_____ break down dead plant and animal material.

When food chains connect, they form a ______.

A _____ eats other organisms.

A _____ is another word for home.

A _____ makes its own food.

A _____ shows how energy passes from one organism to another.

A ______ is a type of ecosystem that is hot and dry.

______ is a mixture of rocks and humus.

A _____ is an ecosystem where water covers the land most of the time.

______ describes the average weather in a place over a long period of time.

An _____ is a large body of salt water.

A _____ is an ecosystem that has many trees

To _____ is to move.

When an animal is _____ it is active at night.

An _____ helps an organism survive in its environment.

To _____ means to go into a deep sleep.

_____ is when an organism imitates another organism.

_____ helps an organism blend in with its environment.