The esophagus is part of the digestive system.
Answer:
i think it will B,C and A hope it helps
Aerobic Respiration vs. Anaerobic Respiration. ... Aerobic respiration takes place in the presence of oxygen, produces a large amount of energy. Carbon dioxide and water are produced as the waste products. Anaerobic respiration takes place without the use of oxygen, produces small amounts of energy.
Well its 2 or more so id say Many