Answers

2015-06-16T19:35:56+08:00
The two small balloons inflate :)

the balloon you pull represents the diaphragm, and the two small balloons inside the bottle represents the lungs. so when the diaphragm contracts (when you pull the balloon), the lungs take air.

-cnfx
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2015-06-16T19:41:55+08:00
The air exits the balloon which made the balloon deflate
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