Answers

2014-06-29T20:31:33+08:00
Oxygen is important to our body b cause it can help u to breath and it can help u to survive

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2014-06-29T20:46:29+08:00
The oxygen is more important to our body because it is also important to our cells to survive & cells to our body needed an oxygen in order to them to perform their function :)
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