Answers

2016-06-19T13:14:05+08:00
The two balloons loosen up ang return to their original size. ❤
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2016-06-22T20:57:17+08:00
As you push up the balloon , the two small balloons will deflate . That means when we exhale the diaphragm relaxes and the lungs will decrease in volume and the pressure will increase.
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