Question

Short / long answer type questions.
Man can live without food for a few days but cannot live without oxygen for even a few minutes. Why?

Answer 1

There is already stored food in the form of fats, which can be degraded by the body when there is a scarcity of energy. But oxygen is not stored in our body, so we need to get it constantly in order to survive. Oxygen is constantly required to keep the body in working state because of its role in energy production through food metabolism.