Nitrogen Cycle

Front

The process in which nitrogen circulates and is recycled is called

Back

The nitrogen cycle

Front

Organisms that need nitrogen to survive.

Back

all living things

Front

How do animals get the nitrogen they need?

Back

From the food they eat

Front

What process occurs when dead plant and animal matter decomposes and nitrogen is released back into the atmosphere?

Back

Denitrification

Front

Bacteria fix nitrogen from the atmosphere into a form plants can use.

Back

True

Front

Plants and animals need nitrogen to make __________.

Back

Protein

Front

What process returns nitrogen to the atmosphere and soil after it is contained in plants and animals?

Back

decomposition

Front

What happens when organisms die and decay?

Back

Their nitrogen returns to the soil

Front

What is the process of combining nitrogen gas with other elements to make nitrogen into usable compounds?

Back

nitrogen fixation

Front

Organisms require nitrogen to make which of the following?

Back

proteins and nucleic acids