What is the "advantage" of increase in the volume of chest cavity as well as decrease in the volume of chest cavity?\
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When the chest cavity decreases or expands the air that is Oxygen comes in our body through lungs and when it increases the foul air that is carbon dioxide goes out from our body....
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Explanation:
It is so because when the volume of chest cavity increases the foul air that is carbon dioxide goes out from our body through the lungs but when it decreases or expands the air that is Oxygen comes in our body through lungs
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