Answers

2014-06-24T22:42:34+08:00
It takes lungs an oxygen when you inhale and imissive carbon dioxide when you exhale .
blood deliver oxygen throughout the body and oxygens deliver nutrients through the whole body , hope i helped you :)
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2014-06-24T22:42:50+08:00
Gas exchange took place when you inhale and exhale. When we inhale, oxygen goes to our body and when we exhale, we emits carbon dioxide.
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