What is the difference between nitrification and denitrification?

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(N/A)
Nitrification Denitrification
$(i)$ The process of conversion of ammonia to nitrites and then to nitrates. $(i)$ The process of converting nitrates into free nitrogen gas $(N_2)$.
$(ii)$ This is an oxidative process where nitrogen is converted into a more usable form for plants. e.g.,Nitrosomonas and Nitrobacter. $(ii)$ This is a reductive process in which nitrogen is released back into the atmosphere. e.g.,Pseudomonas and Clostridium.

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