Question

Nitrogen fixation
A.changes the free nitrogen (N2) to a form usable by plants
B. especially changes nitrogen compounds, mostly amines such as NH2
C. both (a) and (b)
D. fix the free nitrogen (N2) by which it should not be usable by plants

Answer 1

Option no. C. will be the answer of your question
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Answer 2

Answer:

changes the free nitrogen (N2) to a form usable by plants & especially changes nitrogen compounds, mostly amines such as NH2 ( Amino radical )

EXPLANATION

BECAUSE N2 FIXING PLANTS WILL HAVE RIBOSOMS WHICH WILL CONVERTATMOSPHERIC N2 TO NH2