global warming

global warming - Hallie Ritchie English 102 Global Warming...

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Hallie Ritchie 1 English 102 10/25/2007 Global Warming The beginning of the Industrial Revolution brought many new, exciting inventions into our lives to simplify our lives and made them more efficient. Such inventions included cars, household appliances and plant that burn solid waste, fossil fuels such as oil, natural gas, and coal, and wood and wood products for fuel. Before the Industrial Revolution, human activities caused very few gases to be released into the atmosphere, but now scientists say, through the burning of fossil fuels, a large population growth and deforestation, humans are affecting the mixture of gases in the atmosphere (Houghton). This mixture of gases in the atmosphere is causing the worldwide problem known as Global Warming. Global warming is one of our toughest environmental challenges. It threatens the health of people, wildlife and economies around the world. The problem is carbon dioxide and other heat-trapping pollution. This pollution mainly comes from cars, power plants and other industrial sources that burn gasoline, coal and other fossil fuels (Nicholls). This matter collects like a blanket in our atmosphere. As a result, the planet gets warmer. According to the United States Environmental Protection Agency, the earth has a natural “greenhouse effect” which is caused by energy from the sun controlling the earth’s weather and climate, and heats the earth’s surface. In response to the sun, the earth radiates energy back into space. Atmospheric greenhouse gases such as water vapor, carbon dioxide, and other gases, trap the energy leaving the earth and retaining it as heat, much like a greenhouse ceiling
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(Ecobridge). The record of greenhouse gas links to climate is becoming more evident by records of climate changes which were not global in extent. It is becoming increasingly clear, for instance, that a severe, millennium-long cooling event in the northern hemisphere which saw an ice-cap grow over northern Scotland some 12,000 years ago, saw warming in the southern hemisphere (Hesselbo). Another uncertainty of the recent record is that we are already at a temperature high of the current Ice Age, and so, climatically, are heading towards uncharted territory. This is a natural and necessary effect, without it temperatures on earth would be much lower than they are now and life as it is today would not be possible, but with the greenhouse effect the earth’s average temperature is a more comfortable and life-supporting 60 degrees Fahrenheit. The problems that have arisen with the greenhouse effect have occurred due to the increase in atmospheric greenhouse gases (Nicholls). The EPA reports that data collected over the last 100 years shows that the average land surface temperature has risen between .8 and one degree Fahrenheit, precipitation has increased around one percent over the globe and the
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global warming - Hallie Ritchie English 102 Global Warming...

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