When we breathe in, we inhale many gases present in the air, including oxygen. What do you think happens to the gases that are not needed by the body?
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When air has been drawn into the lungs, oxygen is absorbed into red blood cells who carry it to all the different parts of the body. When the cells are depleted of oxygen, they return to the lungs carrying the waste product of carbon dioxide. ... That's where we push all of those unwanted gases out of the lungs.
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When air has been drawn into the lungs, oxygen is absorbed into red blood cells who carry it to all the different parts of the body. When the cells are depleted of oxygen, they return to the lungs carrying the waste product of carbon dioxide. Of course, the air we breathe is a mixture of gases not just oxygen.
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