NewScientist The Last Word

Global Breathing So much blame for high CO2 emmission is attributed to the burning of fossill fuels. How much of a contribution to the overall volume is from human respiration? Surely, as world population continues to rise, the amount of exhaled CO2 will also rise?
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Categories: Environment.

Reply	CWMBOY65 says: Nil! All the carbon we breathe out (in the form of carbon dioxide) is a waste product from the respiration of our food. All the carbon in our food comes originally from the atmosphere, fixed by plants in photosynthesis. (1 vote) average rating:5 Tags: globalwarming.
	posted on 2009-10-11 08:52:51 \| Report abuse

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