▶ Your Answer :
Some people presume that renewable energy sources are not only cost inefficient but they can devastate our environment owing to the leftover of the plants. As for me, however, renewable energy resources will substitute for the existent ones. This is because they can solve the global warming caused by the greenhouse gases which are highly detrimental to ozone layers as well as make us escape from the crisis of resources depletion.
First, the renewable energy sources such as sun, wind, and water can solve the severe global warming. This gives rise to their property that they are components of the nature so that they never harm it. The fossil fuels such as carbon dioxide, methane, and freon exuded from cars or building's vents are the major factors of global warming. However, utilizing the renewable sources made from the hydroelectric or solar energy for transportation and buildings will be helpful for the earth. For example, in some environmentally friendly houses, the thick plates receiving solar energy are installed on the roof of houses. People can make use of them into saving electricity as a phosphorescence, which restores a lot of solar energy in afternoon, then brightly radiates it at night.
Second, we do not have to concern the extermination of energy sources. Because the renewable energy sources are constantly made from the nature, they will never vanish unless the earth disappears. On the other hand, the fossil fuels are strictly confined to the remaining amounts. To be specific, we can only use the remaining amounts of petroleum about fifty years. This is a very serious problem. In this sense, the renewable energy sources are necessary.
In conclusion, renewable energy sources can bring up the positive impacts on our life. They can lessen the proceed of global warming as well as they are a permanent source. Accordingly, I strongly support the idea that renewable energy sources will substitute for the fossil fuels.
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