Answers

2014-06-12T13:21:40+08:00
The lungs movement will deplete & expand . when you inhale it will deplete, and when yo exhale it will expand . 
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thank you po
your welcome :)
thangks : )
2014-06-12T13:26:43+08:00
When the diaphragm contracts we breathe in O² (inhalation process takes place).
When the diaphragm relaxes we take out CO² (exhalation process takes place).
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