EARTH

9. EARTH

13. USA Alska Lake Baikal Russia Germany Dunhuang Gebi China Mediterranean Sea India Task: Find the places on the map of the world where the damage has happened.

14. Earth

15. Dunhuang used to be a great city Cattle problem Soil lost 1.increase cattle 1.trees cut down 2.rain fail to come 2.rain falling 3.not kill cattle 3.soil washed down 4.grass eaten up 4.soil blown away Dunhuang has become a desert

16. Air

17. Air pollution by the year 1986 Chemical rain 50% of trees damaged A cloud of radiation 125,000 people died in 1986 2,500 people killed(injured, lost their sight) Dangerous gas in 1984

18. Water

19. Water pollution between Europe and Asia 1. no longer safe for swimming 2. not safe to eat the fish no longer 700 kinds of plant and animal life living in Asia 1. more than 34,000 birds killed northwest coast of Alaska 2. 10,000 animals killed 3. 4,800 square kilometres polluted

20. Many parts of the world with large population and plenty of crops have become desert. • 2. Land may become poor if farmers do not limit their cattle. • 3. Good soil is gradually lost these days as trees are being cut down. • 4. Air pollution and water pollution are the two causes of problem that many parts of the world have become desert. • 5. Chemicals in the smoke from power stations can travel hundreds of miles before falling down to the ground. • 6. After a bad accident at a nuclear power station, 50%of the trees in Germany were damaged. • 7. The writer uses the examples of the accidents in both India and Russia to explain how water is polluted. • 8. Once oceans are polluted, they are not able to clean themselves. T T T F T F F F

21. Dunhuang used to be a great city Cattle problem Soil lost 1.increase cattle 1.trees cut down 2.rain fail to come 2.rain falling 3.not kill cattle 3.soil washed down 4.grass eaten up 4.soil blown away Dunhuang has become a desert

22. Discussion: What do you think we should do to protect our earth?

23. Saving the earth !