The Nitrogen Cycle

How do herbivores get nitrogen?

• by eating meat

• by eating plants

• by eating meat and plants

• by drinking water

What percentage of nitrogen is in the air?

• 21%

• 78%

• 56%

We can use nitrogen gas directly from air.

• True

• False

We can use nitrogen once it has been combined with other ________

• things

• animals

• elements

What creates nitrogen compounds in the soil?

• flowers

• bacteria

• rain

Tags

NGSS.MS-LS2-3

Living things need nitrogen for making _______.

• protein

• sunlight

• water cycle

Tags

NGSS.MS-LS3-1

Nitrogen moves between the ....

• the soil and air

• the atmosphere

• the atmosphere, the soil, and living organisms.

  
  

Tags

NGSS.MS-LS2-3