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How do trees help us breath

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asked Nov 15, 2013 in Smoking by anonymous
   

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Trees can’t take credit for all the oxygen in the world. In fact, algae and other marine plants produce an estimated 70 percent of Earth’s oxygen through the photosynthesis process that takes place in oceans. Read more: http://iipdigital.usembassy.gov/st/english/article/2011/05/20110524121919nirak0.5654718.html#ixzz2maDunohU

answered Dec 5, 2013 by amanda01 Inquisitive Expert (92,460 points)

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