1.

What is the name of processes of Nitrogen cycle? 1. Nitrogen Fixation        2. Nitrification 3. Assimilation               4. Denitrification Choose the correct option

A. 1 and 2            
B. 3 and 4
C. 1, 2, 3              
D. 1, 2, 3, 4
Answer» E.


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