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[–] crab_crouton 0 points 3 points (+3|-0) ago 

Along the same lines, trees grow from the carbon dioxide in air. Thus, you can say that trees grow literally out of the air.

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[–] joethebob 0 points 0 points (+0|-0) ago 

I remember the first time someone said that to me as a kid, blew my mind.

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[–] MrPim 0 points 0 points (+0|-0) ago 

So fat people who lose weight would be helping the ecology? Go Green, Get Fit!