Nitrogen Cycle 
The process of circulating nitrogen between living organisms, the soil and the atmosphere. Nitrogen fixation, Nitrification, Ammonification and Denitrification, are all terms related to the nitrogen cycle.
Nitrogen Cycle
The process of circulating nitrogen between living organisms, the soil and the atmosphere. Nitrogen fixation, Nitrification, Ammonification and Denitrification, are all terms related to the nitrogen cycle.