n the amount of greenhouse gasses many others believe that humans are partially responsible (What is global warming?). Numerous things can cause the amount of greenhouse gasses on the earth to rise. The Industrial Revolution of the early 1900s is said to have increased the level of carbon dioxide by 30 percent, methane by 100 percent, and nitrous oxide by 15 percent (Global Warming). Another one of the factors that can increase the levels of greenhouse gasses is the burning of fossil fuels. Fossil fuels make up 90 percent of the commercial production of energy in the world today (Gribbin 235). This percentage is far too high for the environment to handle. Along with the variety of causes for global warming, there are
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