The conversion of nitrogen gas to ammonia is called
a. denitrification
b. nitrogen cycle
c. nitrogen fixation
d. nitrogen limitation

C

Explanation:

Step 1 Nitrogen Fixation- Special bacteria convert the nitrogen gas (N2 ) to ammonia (NH3) which the plants can use. ∎ Step 2- Nitrification- Nitrification is the process which converts the ammonia into nitrite ions which the plants can take in as nutrients.

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