Answers

2014-06-23T08:06:16+08:00
When you inhale your lungs become filled with air, oxygen. When you exhale your lungs release carbon dioxide. When you inhale and exhale you begin a process of oxygenation to your entire body.
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2014-06-23T17:19:46+08:00
Respiration;gas exchange between the oxygen and the carbondioxide
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