Nitrogen Cycle DOL

Which process in the nitrogen cycle converts atmospheric nitrogen (N2) into forms usable by plants and animals?

•  Denitrification

• Nitrification

• Nitrogen fixation

•  Ammonification

Why do all organisms need nitrogen?

• To live and grow 

• To build phosphorus

• To make oxygen levels grow

• To help blood circulate better

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Nitrogen is an essential element for the formation of proteins and DNA in living organisms.

• True

• False

Tags

NGSS.HS-LS1-1

Denitrification is the process by which nitrates are converted back into atmospheric nitrogen gas by denitrifying bacteria.

• True

• False

Nitrogen-fixing bacteria play a role in converting nitrates to atmospheric nitrogen gas.

• True

• False