The theory of man-made global warming rests on scientific evidence that the combustion of fossil fuels in the service of human energy needs has added high concentrations of carbon dioxide and methane and other heat-trapping greenhouse gases to the earth’s atmosphere. In the opinion of international scientists, global temperatures have risen significantly since the onset of the Industrial Revolution in the mid-1800s, when human activity became dependent on the use of coal, oil, and gas.
In fact, many researchers are convinced that human activity is responsible for the majority...
Source: Global Warming, ©2002 Gale Cengage. All Rights Reserved. Full copyright.
(The entire page is 348 words.)
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