Answer:
Denitrification is the process which completes the nitrogen cycle.
Explanation:
Nitrogen cycle: in which nitrogen is circulated in various ways by nature.
Denitrification: Denitrification is the final process of the nitrogen cycle in which bacteria reduce the nitrate and molecular nitrogen is produced.This process is carried by bacteria examples are Pseudomonas and by paracoccus in the anaerobic environment.
