why does Inspired air contain 21% oxygen while expired air contains 16% oxygen?
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more oxygen used to create energy; less carbon dioxide than… Exhaled. air which contains: ... As a result the composition of inhaled and exhaled air is different. ... Oxygen, 21, 16.
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When a person inhales air, 21% of that air is oxygen. However, only 16% of the air exhaled is oxygen. Provide at least two reasons for why there is a decrease in the amount of oxygen exhaled. In respiration, inhaled oxygen reacts with sugar in your body to produce carbon dioxide and water vapor to produce energy.
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