Nitrogen Cycle

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

• bacteria

• rain

• fungi

• car exhaust

The process in which nitrogen circulates and is recycled is called

• The nitrogen cycle

• The carbon cycle

• The water cycle

• The phosphorus cycle

Tags

NGSS.MS-ESS2-1

NGSS.MS-LS2-3

Organisms that need nitrogen to survive.

• only plants

• only animals

• only bacteria

• all living things

Tags

NGSS.MS-LS2-1

Gas that makes up 78% of our atmosphere.

• Oxygen

• Nitrogen

• Hydrogen

• Carbon Dioxide

True or False? Plants and animals cannot use nitrogen directly from the air.

• True

• False

According to this diagram, animals get proteins from eating ________________________

• decomposers

• bacteria

• plants

• sunlight

Tags

NGSS.MS-LS1-7

NGSS.MS-LS2-1

NGSS.MS-LS2-3

One path that nitrogen could take would be...

• air -> animals -> plants -> bacteria

• animals -> air -> bacteria -> plants

• bacteria -> air -> plants -> animals

• air -> bacteria -> plants -> animals

In the nitrogen cycle, what does label A in the diagram represent?

• Gas

• Clouds

• Carbon dioxide in the atmosphere

• Nitrogen in the atmosphere

Tags

NGSS.MS-ESS2-1

NGSS.MS-LS2-3

True or False? All plants have nitrogen fixing bacteria in their roots.

• True

• False

Where is most nitrogen located?

• Water bodies

• Plants

• Atmosphere

• Soil