Question

The amount of nitrogen in the atmosphere is maintained by a biological cycle which involves two processes, first is to withdraw nitrogen from the atmosphere and secondly to add the same to atmosphere. Can you guess the names of these two respective processes.
(a) Nitrogen fixation and nitrification
(b) Nitrogen fixation and denitrification
(c)Nitrification and denitrification
(d) Nitrification and nitrogen fixation​

Answer 1

Answer:

nitrogen fixation and denitrification

Answer 2

Answer:

option (b) Nitrogen Fixation and Denitrification

Explanation:

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