(Hamburg, 2009, p.186-187) For example, burning of fossil fuels like coal, oil, natural gas impacts on natural climate significantly because of the huge needs of transportation, heating, manufacturing, cooling, electricity generations. ... (Ibid., para.9-10) Because of burning of the fossil fuels, green house gas will be produced, such as methane, chlorofluorocarbons (CFCs), carbon dioxide. ... (West, para.6) Substituting green power such as wind, water, and etc. for fossil fuels is also necessary. ... For example, human activities, such as burning of fossil fuels like coal, natural gas, oil, ...
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- Grade Level: High School