高三英語(yǔ)拯救地球課件-全文預(yù)覽
【正文】 re killed. Chemical rain. W A T E R In some places it’s no longer safe for swimming, nor is it safe to eat the fish. Factories and cities produces a lot of waste. Same as above. Lake Baikal, which used to be the cleanest in the world,is now polluted. Waste produced from a chemical factory. The main idea of each passage Earth: Air: Water: The area of desert is growing and good soil is gradually lost. Chemicals in the smoke cause a lot of damage and serious accidents took place from time to time. 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. DISCUSSION (1) What kind of pollution can you think of ? (2) Why trees are important? (3) What are the causes of water pollution? (4) What can be done to stop land from being into desert? (5) What else do we know about the problems
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