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Global Warming Is Caused By Human Activities

1255 words - 5 pages

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 activities including energy generation, transportation, industrialization, and commercial and residential activities produce a considerable amount of the greenhouse gas emissions, more than nature can absorb in natural processes. For example, the United States Environmental Protection Agency (EPA) reported, in 2011, the quantity of greenhouse gas emission in the United States was 6,702 million metric tons of CO2 equivalent. This gas emission is associated with human activities. For instance: 33% comes from electricity production, 28% from transportation, 20% from industries, 11% from commercial and residential activities, and 8% from agriculture. However, only 14% of those emissions are offset by natural processes (EPA, 2013). It is clear that land use and forestry only assimilate a smaller amount of gas emissions compared with the quantity of them generated for anthropogenic activities. In contrast to this data, some skeptics have used the results of the scientific studies to show that greenhouse gas emissions is a regular process through the Earth’s history. One of those studies is the measurement of CO2 from ice cores. The Survey British Antarctic collected and reported the results from the ice cores collected in...

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