Question of the day

In the nitrogen cycle, the transformation of gaseous nitrogen into nitrogen-containing compounds is performed primarily by

Organisms require nitrogen to produce amino acids. The nitrogen cycle produces the fixed form of nitrogen these organisms need. A special type of bacteria called nitrogen fixing bacteria take in atmospheric nitrogen and produce ammonia. Other bacteria use this ammonia to produce nitrates and nitrites, which are used by plants to make amino acids which are then used to make plant proteins.

fungi bacteria green plants herbivores carnivores