Global Warming is Caused by Human Activities

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Nowadays, global warming is a term that is widely used by everyone; however most people do not know what it means. Global warming is a phenomenon for which the average temperature of the earth’s atmosphere and the oceans is increasing because of the high concentration of carbon dioxide (CO2). The rise in CO2 in the earth atmosphere has been observed since the industrial revolution began and it is projected to continue rising. According to America's Climate Choices "The average temperature of the Earth’s surface increased by about 1.4 °F (0.8 °C) over the past 100 years, with about 1.0 °F (0.6 °C) of this warming occurring over just the past three decades" (2011). With that data we can figure out that the temperatures are increasing very fast in the last few decades which coincide with industrial growth due to the fact that the greenhouse gasses are generated by the combustion of fossil fuels and deforestation. As the Intergovernmental Panel on Climate Changes (IPCC) reported in 2007, a great number of scientists from all the most important industrialized countries think that global warming is caused by production of greenhouse gases that come from human activities, especially those activities that involve the burning of fossil fuels and deforestation. However, there are scientists, they are called skeptics, who think that global warming is not real, instead they think climate changes undergo in a normal trend through the earth history. While some skeptics could argue that global warming does not exist, the following information based on: human activities have produced an enormous amount of greenhouse gas emissions and the increasing of them in the last 200 years proves otherwise. Some studies have demonstrated that the human ac... ... middle of paper ... ...represents a decrease in their economy and power. REFERENCES America's Climate Choices. Washington, D.C.: The National Academies Press. 2011. p. 15. ISBN 978-0-309-14585-5. Briggs, H. (2007), 50 years on: the Keeling curve legacy, BBC New, Retrieved from http://news.bbc.co.uk/2/hi/science/nature/7120770.stm Boden, T.A., G. Marland, and R.J. Andres. 2010. Global, Regional, and National Fossil-Fuel CO2Emissions. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, U.S. Department of Energy, Oak Ridge, Tenn., U.S.A. doi 10.3334/CDIAC/00001_V2010 Jouzel, J., and others: Orbital and millennial Antarctic climate variability over the last 800,000 years, Science, 317, 793-796, 2007 United States Environmental Protection Agency (EPA), (2011), Sources of greenhouse gas emissions, Retrieve from: http://www.epa.gov/climatechange/ghgemissions.
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