Answers

2014-06-19T10:14:56+08:00
When you inhale, Oxygen will enter your lungs. And when you exhale, Carbon Dioxide will be blown out ;)
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2014-06-19T10:39:40+08:00
When you inhale your body will absorb the air that you are needed then, when you exhale you produce carbon dioxide then the plants will absorb it to make it fresh air again. its a cycle of life
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