Friday, March 13, 2009
We should use more alternative energy resources by Satomi Y.
Fossil fuels like coal and oil are limited resources. A lot of fossil fuel is used all over the world. In my opinion, we should use more alternative energy sources like geothermal energy, hydro power, solar power, and wave power. There are two reasons for this. First, unlike fossil fuels, these energies don’t produce carbon dioxide that is the cause of global warming. In addition, combustion of fossil fuels also produces other air pollutants, such as nitrogen oxides, sulfur dioxide, volatile organic compounds and heavy metals.
First, carbon dioxide that combustion of fossil fuels produces is greenhouse gas. Global warming is serious issue. It is generally said that global surface temperature will likely rise a further 1.1°C to 6.4 °C during the twenty-first century. Therefore, greenhouse gas should be reduced.
Second, combustion of fossil fuels produces hazardous chemical substances. For example, nitrogen oxides and sulfur dioxide are the cause of acid rain. In addition, volatile organic compounds and heavy metals are harmful to the human body. On the other hand, geothermal energy, hydro power, solar power, and wave power don’t produce such substances.
To conclude, fossil fuels cause many problems for the environment. However, now, if fossil fuels are run out, industry of all over the world will not be maintained. We should consider well how to get energy without fossil fuels.