Fossil Fuels

What are the original sources of carbon?

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January 06, 2013 7:24AM

Carbon is formed in the cores of certain stars after lighter

elements have been formed. The carbon on earth came from older

stars that exploded to release their carbon.

On Earth, carbon is found as carbonate rocks, and dissolved in

seawater as carbonic acid, and in the air as carbon dioxide. Plants

and animals contain a small fraction of the Earth's total


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