Multiple Choice
Choose the correct process of nitrogen fixation.
A) N2 NO3- NH3 or NH4+
B) N2 NH3 NH4 + or NO3-
C) N2 NH4+ NH3 or NO3-
D) NO3- NH3 or NH4+ N2
E) NH4+ or NO3- NH3 N2
Correct Answer:

Verified
Correct Answer:
Verified
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