Answers

The Brainliest Answer!
2014-06-12T18:08:32+08:00
As you pull down the balloon at the bottom of the model , the two small balloons inflate.That means when we inhale the diaphragm contracts and the lungs will have a greater volume and the pressure will be  lesser .
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2014-06-12T18:09:21+08:00
The 2 small balloons will be inflated
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