ANAEROBIC respiration is a process in which food can also be broken down in absence of oxygen. The breakdown of glucose takes place in three ways that are as followsThe food is broken down to release ENERGY in presence of oxygen to GIVE carbon dioxide, water and energy.The organisms that can survive in the absence of air are called anaerobes. Through the anaerobic respiration process, they get the energy to survive. In the absence of oxygen, glucose BREAKS down into alcohol and carbon dioxide.When there is a temporary deficiency of oxygen, Our muscle cells respire anaerobically for a short period of time. During heavy exercise, fast running, cycling, walking for many hours or heavy weight lifting, the DEMAND for energy is high. But the supply of oxygen to produce the energy is limited. The demand for energy in the muscle cells takes place through anaerobic respiration.