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oxygen is important for all living creatures because it is important for our cells to survive. Cells within our body need oxygen in order for them to perform their function. If our body does not have enough oxygen, our cells will not be working properly. If total oxygen is removed, our cells will die and eventually so will the person.
In the human body, the oxygen is absorbed by the blood stream in the lungs, being then transported to the cells where an elaborated change process takes place.

Oxygen plays a vital role in the breathing processes and in the metabolism of the living organisms.

Probably, the only living cells that do not need oxygen are some anaerobic bacteria that obtain energy from other metabolic processes.


Oxygen is the most important element in the body. Withouth it, we'll be able to survive for only a few minutes. 90% of our energy is created by Oxygen and are regulated by it. 
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