Ecosystems #7

Match it! Select the correct answer from the pull down...Good luck!

Nitrogen gas is fixed, or changed into forms of nitrogen that plants can use. These forms are nitrates or ammonia.

warming of Earth's surface and the air above it. It is caused by gases in the air that trap energy from the sun.

The food-making process in green plants that uses sunlight.

the slow changing of a liquid into a gas

breathing in oxygen and breathing out carbon dioxide

An organism that makes its own food. (plants)

the loss of water through a plant’s leaves.

This is the process by which ammonium gets changed into nitrates by bacteria. Nitrates are what the plants can then absorb.