Nitrogen cycle

Front

How much of the atmosphere is composed of nitrogen gas?

Back

78%

Front

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

Back

bacteria

Front

Organisms that need nitrogen to survive

Back

all living organisms

Front

Can plants and animals use nitrogen directly from the air?

Back

True

Front

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

Back

decomposition

Front

What happens when organisms die and decay?

Back

Their nitrogen returns to the soil

Front

The process in which Nitrogen circulates and is recycled is called ____________

Back

The nitrogen cycle

Front

_____ is the conversion of organic nitrogen into ammonia

Back

Ammonification

Front

Nitrification happens in the ______

Back

Soil

Front

What converts nitrogen gas into a usable form for plants and animals? Options: bacteria, rain, fungi, car exhaust

Back

bacteria