When we contemplate the miraculous engineering of the human lungs, we will be speechless with its incredible feats. If you had been unable to breathe for a minute, you would have given up all you owned in order to be able to breathe again. In another minute or so you would have lost consciousness. Brain death would follow in another two or three minutes, and your life would be at an end.
read more.....
http://www.wonderwhizkids.com/index.php/lungs
read more.....
http://www.wonderwhizkids.com/index.php/lungs
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