Human Activities Cause Global Warming Essay

1327 Words Nov 10th, 2015 null Page
Today, global warming has been the most controversial issues of human being for the past 50 years. Global warming is an increase in the average temperature of the atmosphere near the Earth 's surface, and it is already happening and represents one of the greatest environmental threats that the planet is having to suffer. Every year, more than billion tons of carbon dioxide are released into the atmosphere by human activities. This leads to the increase of greenhouse gasses as well as changes in global climate seriously, though not all of people can be aware of any changes of climate to their own life, even animals. Some people refuse to believe that most of human activities cause global warming, because they think that the increase is just the part of the natural climatic change of earth and other natural causes. That is the reason why people act and impact to natural environment unconsciously from the past to the present. Whereas, NASA experts concluded that “there 's a more than 90 percent probability that human activities over the past 250 years have warmed our planet” (A blanket around the Earth).Therefore, human contributions are the major reason causing global warming, and people need should be responsible for their impact on the planet.
First of all, one of the main reasons causing global warming is due to the economic development of human activity involving industrial, construction, science, etc. Constraining economic growth or transforming the operation of the…

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