Thesis statement:
Acid rain is caused by three reasons and can bring negative effect.
Topic sentences:
1. The components from the exhaust gas of vehicles make a contribution to acid rain.
1) People earn more now. Life quality promoted
2) More cars are purchased.
3) More waste gas is released.
2. The sulfide products from factory or burning fossil fuel let acid rain easily produced.
1) Most energy use to manufacture and warm is from burning fossil fuel.
2) Although there is filter, but chemicals also released.
3. Over use of CFC or refrigerator brings convenience to result acid rain.
1) Every family got refrigerator.
2) CFC from refrigerator reacts to hydrochloric acid which is the main component of acid rain.
4. Many buildings are devastated.
1) Some buildings are made of limestone.
2) Limestone reacts with acid rain.
3) Some historical building is disappeared (erode) because of the acid rain.
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Harry, I'd like you to work on the C&E paper. In this paper, just focus on what causes acid rain. You don't have to mention the effects of the acid rain in the 4th body, which distracts your paper. Instead, just elaborate on the three main reasons, which cause the acid rain. Is it clear? If you have any problems, let me know. :)
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