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Explanation:
Global warming looms large over humanity. According to the EPA, worldwide greenhouse gas emissions attributed to human activities increased twenty six percent from 1990 to 2005. The rise in carbon dioxide concentrations in the atmosphere accounts for approximately eighty percent of this increase. Often debated, the effects of global warming on the planet and the human population are frightening and mostly self-inflicted.
Power Plants
Forty percent of U.S. carbon dioxide emissions stem from electricity production. Ninety-three percent of the electric industry emissions result from burning coal. According to the EPA coal-fired power plants, municipal and medical waste incineration account for two-thirds of U.S. mercury emissions.
Transportation
EPA reports state that thirty-three percent of U.S. emissions come from the transportation of people and goods.
Farming
Industrial farming and ranching releases huge levels of methane and carbon dioxide into the atmosphere. Farming contributes forty percent of the methane and twenty percent of the carbon dioxide to worldwide emissions.
Deforestation
Deforestation to use wood for building materials, paper and fuel increases global warming in two ways -- the release of carbon dioxide during the deforestation process and the reduction in the amount of carbon dioxide that forests can capture.
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