The correct sequence of stages in nitrogen fixation is
Ammonification, nitrification and denitrification
Nitrification, denitrification and ammonification
Denitrification, nitrification and ammonification
Ammonification, denitrification and nitrification
From an ecological perspective, the nitrogen cycle consists of the following stages:
1. Ammonification
2. Nitrification:
3. Denitrification:
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