Nitrogen Cycle

Front

The process in which nitrogen circulates and is recycled is called

Back

The nitrogen cycle

Front

How much of the atmosphere is composed of nitrogen gas?

Back

78%

Front

Is the nitrogen in the atmosphere in the right form for living things to use?

Back

False

Front

What converts nitrogen gas into a usable form for plants and animals?

Back

bacteria

Front

What can transform nitrogen in the atmosphere into a usable form of nitrogen?

Back

lightning

Front

Round structures on the roots of certain plants

Back

nodules

Front

What is the role of denitrifying bacteria?

Back

Change nitrate back into nitrogen gas.

Front

What is the role of decomposing bacteria in the nitrogen cycle?

Back

Return the nitrogen compounds to the soil

Front

How do plants get the nitrogen they need?

Back

from the soil or water in which they live

Front

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

Back

nitrogen fixation