1. Noise pollution happens causes a change in animals’ living pattern. 

2. Radioactive polIution is very dangerous since it can cause abnormal growth. 

3. The Chernobyl nuclear accident happened made the area uninhabitable.

4. Fossil fuels such as coal or oiI are burned so acid gases are produced.

5. Trees’ leaves are damaged because of the dangerousness of acid rain.

6. Because the tree cannot get enough food energy to stay healthy, leaves are damaged.

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A là lí do để B xảy ra = B xảy ra do A. Các câu trên đều có thể đảo vị trí các vế cho nhau.

Noise pollution causes a change in animals’ living pattern. 2. Radioactive pollution is very dangerous since it can cause abnormal growth./ Since it can cause abnormal growth, radioactive pollution is very dangerous. 3. The Chernobyl nuclear accident made the area uninhabitable. 4. Fossil fuels such as coal or oil are burned, so acid gases are produced. 5. Because of the dangerous acid rain, trees’ leaves are damaged. 6. Because (its) leaves are damaged, the tree cannot get enough food energy to stay healthy.