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What is global warming?

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What is global warming?

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Global warming is an increase in the Earth’s average temperature. This increase can cause a variety of changes in local climates around the world, such as changes in rainfall patterns and a rise in sea level. It also triggers a wide range of changes in plants, wildlife, and human life. “Greenhouse gases,” including carbon dioxide and methane, trap the heat of the Earth. In the last 200 years, human activities — like burning fossil fuels — have increased the levels of greenhouse gases in the atmosphere. This has caused average temperatures to rise. Temperatures are expected to continue to rise in the future.

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Global warming refers to the increases in the average temperature of the Earth’s atmosphere and oceans that has been observed in recent decades. The scientific opinion on climate change is that the average global temperature has risen 0.6 0.2 C over the 20th century, and that it is likely that “most of the warming observed over the past 50 years is attributable to human activities”. The increased volumes of carbon dioxide and other greenhouse gases (GHGs) released by the burning of fossil fuels, land clearing and agriculture, and other human activities, are the primary sources of the human-induced component of warming. Source: Wikipedia http://en.wikipedia.

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A – Global warming has been defined as the progressive gradual rise of the Earth’s average surface temperature caused in part by increased concentrations of Greenhouse Gases in the atmosphere. According to the Pew Center on Global Climate Change, an independent, non-profit scientific and public policy research organization: The scientific community has reached a strong consensus regarding the science of global climate change. The world is undoubtedly warming. This warming is largely the result of emissions of carbon dioxide and other greenhouse gases from human activities including industrial processes, fossil fuel combustion, and changes in land use, such as deforestation. Continuation of historical trends of greenhouse gas emissions will result in additional warming over the 21st century, with current projections of a global increase of 2.5ºF to 10.4ºF by 2100, with warming in the U.S. expected to be even higher. This warming will have real consequences for the United States and the

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