- 1 decade agoFavorite Answer
First, we drop a can of water into the machine, which can decompose the water, and then we can acquire energy when the water was decomposed by the machine. The advantage of this technique is the water is easy to obtain, therefore, automobile can be driven only using water to be the fuel, and won't cause environmental pollution problems. However, due to the high cost and difficult technique, the product of this technique is hard to popularize.
In the present day, there is substitute energy in the world that is solar energy. Solar energy is very convenient and easy to use. It can be used in any place where has light, and also won't cause the environmental problems. However, the energy produced by sun is still limited, and still can't replace the presently energy system. Therefore, that is the reason we need the scientist keep doing the researches. The main purpose of the scientist is to improve human’s life. For an example, there is a scientist, who is also an inventor, called Thomas Alva Edison. At the beginning of his invention, he failed over and over again, and spent a lot of time to test over 2000 material in inventing the bulb. Finally, Edison succeeded his invention of bulb and let human avoid to the dark. For this reason, to become a scientist is always in my dreaming. I would like to be a scientist and devoted to researches to make human’s life become better.Source(s): 自己
- weiLv 51 decade ago