Posted by iowa_tire_guy on December 12, 2007 at 17:06:55 from (207.177.88.101):
In Reply to: Save the world???? posted by Nebraska Cowman on December 12, 2007 at 16:10:53:
Okay Cowman, I want to pickup on one of your comments and ask a question about it. We keep hearing that trees put oxygen in the air and they are our friends so go hug them. (Or go hug your corn plant) But is is really true that plants put oxygen in the air? As I remember my high school science the plant takes in the air, traps and uses the carbon dioxide and nitrogen, and then releases a higher concentration of oxygen back into the air that it took in. Just the same as we do when we breath except we use the oxygen and release everything else into the air. So if this is true then can we say that plants produce oxygen? Not really. We live in a closed system. There is no more oxygen or carbon or any element than there ever was. They are just tied up in one form or another. When a tree is cut down and burnt it doesn't produce anymore heat or carbon or anything else than if it falls and rots where it stood.
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