Question

why do body cells require oxygen​

Answer 1

Our body cells require oxygen to release energy. The oxygen that we take in during respiration is used to break down the food we eat to release energy from it. When we breathe in oxygen, it diffuses into blood from the lung alveoli. hope it helps.

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Answer 2

Answer:

Living organisms would not be able to obtain enough energy to do work without oxygen therefore, an organism need regular supply of oxygen.