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Why have the levels of carbon dioxide in the atmosphere increased over the last 200 years?

April 26, 2017atmosphere carbon dioxide increased levels

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Why have the levels of carbon dioxide in the atmosphere increased over the last 200 years?

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Carbon dioxide has been increasing because plants that decompose to form coal. Coal is mainly carbon and when burnt the oxygen (O2) combines with the carbon (C) to form carbon dioxide(CO2). Coal was the earliest form of large scale energy production.