Biochemical reactions mentioned above happens when the oxygen remaining in the water. If oxygen depletion. Air bacteria (aerobic bacteria).(Anaerobic bacteria).
Biochemical reaction above occurs when oxygen in the water, there are still remaining and if oxygen. Bacteria (aerobic bacteria) use category. (anaerobic bacteria)
The above reaction biochemistry will occur when the source of water is also a remaining oxygen and oxygen if it runs out of air bacteria (aerobic bacteria).(anaerobic bacteria).