Quote:
Originally Posted by StrokeKing
Thanks for the info. i havent use Oxygen to breathe and now you give me an idea. well yeah too much of everything will give us no good.
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Air contains 21% oxygen. When you breathe, your lungs only use 6% of the oxygen in that breath. That's one of the reasons mouth to mouth resusitation works. There is still plenty of oxygen in an expelled breath.