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…showed last 75 words of 1381 total…accepting that global warming is occurring because of human activities. The Energy Information Administration project that without policy changes, emission of carbon dioxide, the main heat trapping pollutant, will increase by about 35% by 2020(Kahn 1). An increase in global temperature would bring changes to the entire planet, and therefore to every nation. This make greenhouse effect an important international issue. In 1997 Kyoto protocol, industrialized countries commits to reduce greenhouse gas emission by 5.2 percent of 1992 levels by 2012.