Answers

2014-06-11T06:08:01+08:00
The movement of the diaphragm affects the air pressure inside the bottle causing the increase and decrease of air in the lungs.

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2014-06-14T07:00:45+08:00
When the air/oxygen is breath in,the diaphragm expands
when the air/oxygen is breath out,the diaphragm construct/collapse
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