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Saving the earth

Saving the earth. 新都四中网络中心搜集整理 http://www.xdsz.com. Earth. USA Alska. Lake Baikal. Russia. Germany. Dunhuang Gebi. China. Mediterranean Sea. India. Air. Water. 4.Air pollution and water pollution are the two causes of problem that many parts of the world have become desert.

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Saving the earth

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  1. Saving the earth 新都四中网络中心搜集整理 http://www.xdsz.com

  2. Earth

  3. USA Alska Lake Baikal Russia Germany Dunhuang Gebi China Mediterranean Sea India

  4. Air

  5. Water

  6. 4.Air pollution and water pollution are the two causes of problem that many parts of the world have become desert. Ture or False • Many parts of the world with large population and plenty of crops have become desert. T 2.Land may become poor if farmers do not limit their cattle. T 3.Good soil is gradually lost these days as trees are being cut down T F

  7. 5. Chemicals in the smoke from power stations can travel hundreds of miles before falling down to the rain. F 6. After a bad accident at a nuclear power station, 50%of the trees in Germany were damaged. F 7. The writer uses the examples of the accidents in both India and Russia to explain how water is polluted. F 8. Once oceans are polluted, they are not able to clean themselves. F

  8. The main idea of each passage The area of desert is growing and good soil is gradually lost. Earth: Chemicals in the smoke cause a lot of damage and serious accidents took place from time to time. Air:

  9. Water pollution is caused by man’s waste. The waters of this great lake have been dirtied and 4800 square km of ocean were polluted by oil. Water :

  10. DISCUSSION

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