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Line 12:
Line 12: − Increased concentrations of carbon dioxide and methane in the atmosphere lead to slight increases in atmospheric temperature, but the main factor is water in the form of [[water vapor]] and [[cloud cover]]. + − Historically, variations in global air temperature have been followed centuries later by corresponding changes in carbon dioxide levels. Thus, temperature drives carbon dioxide.+
CO2 and temperature - which comes first?
==The science of global warming==
==The science of global warming==
Going back thousands of centuries into the past, variations in global air temperature are closely associated with corresponding changes in carbon dioxide levels. Scientists generally believe that temperature drives carbon dioxide{{fact}}, although some have called the data ambiguous. [http://www.daviesand.com/Choices/Precautionary_Planning/New_Data/ Davies and Company]
Increased concentrations of carbon dioxide and methane in the atmosphere lead to slight increases in atmospheric temperature, but the main factor is water in the form of [[water vapor]] and [[cloud cover]].
==Politicization of the issue==
==Politicization of the issue==