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In the nitrogen fixation process, nitrogen fixing bacteria converts the N2 in the atmosphere into NH3 (ammonia). This bacteria binds hydrogen molecules with the gaseous nitrogen to form ammonia in the soil. ... From the conversion of ammonia to nitrites, bacteria also aids in this process called nitrification
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Explanation:
biology of your talking about life evolution but all if your talking about mankind evolution and technology
A,B,D are correct so C , is the one that will change the cell theory
