The 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 is the formula for atmospheric nitrogen?

Back

N₂

Front

Gas that makes up 78% of our atmosphere.

Back

Nitrogen

Front

According to this diagram, plants absorb: nitrates, nitrogen fixing bacteria, animals, decomposers

Back

nitrates

Front

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

Back

True

Front

Organisms that break down dead plants & animals and release nitrogen back into atmosphere...

Back

bacteria

Front

Can plants and animals use nitrogen directly from the air?

Back

No, they cannot.

Front

What happens when organisms die and decay?

Back

Their nitrogen returns to the soil