Answers

2014-06-12T19:36:32+08:00
As you push the balloon , the two small balloons will deflate. Likewise , when you exhale the diaphragm muscle relaxes and the lungs will have a lesser volume and a higher pressure.
4 4 4
2014-06-12T20:23:31+08:00
When you push the balloon at the bottom the two balloon inflate inside the bottle. 
2 4 2
i mean when you pull down hehehe..... if you push the balloon deflated