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建立人际资源圈Global_Warming
2013-11-13 来源: 类别: 更多范文
Global Warming
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 plants 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. This mixture of gases in the atmosphere is causing the worldwide problem known as Global Warming. 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 earths weather and climate, and heats the earths 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. This is a natural and necessary effect, without it temperatures on earth would be much
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