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2015-06-13T17:56:02+08:00

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The process of breathing performs a number of important gas exchanges through inhalation and exhalation. When someone inhales, they contract and move their diaphragm, which allows the lungs to expand. This is a part of the process needed to psychically suck in the air. When a person exhales, the diaphragm relaxes and the movement is undone. This allows air to be gradually pushed out of the lungs. 
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2015-06-14T16:56:39+08:00

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When we inhale oxygen takes place and when we exhale carbon dioxide is getting out from our body..i think so...
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