1. Environment Problems --How to escape our world

2. acid rain

3. disafforest

4. hungriness

5. die out

6. The hole of ozone

7. greenhouse effect Today’s topic:

8. What cause greenhouse effect? The reason is –The greenhouse gas! The greenhouse gas mass as a cover made of glass,everyday,the ground get the quantity of heat from the sun,however, the ground can not emanate these heat out of the earth. As a result,our world is becoming warmer and warmer.

9. Who product the greenhouse gas? ① The factory ② The gas of cars ③ The reduction of forest ④ The fire of forest ⑤ Coal’s Burning

10. What can we do for our world? First, we should improve our technology, if our industry can be independent from coal, we will reduce a lot of greenhouse gas. In other word, we must find a new and cheap energy sources instead of coal. Second, we should protect our forest. Forest can take in one kind of dominating greenhouse gas—co 2

11. Third, we should limit the account of cars. The cars product a lot of greenhouse gas. And too many cars not only product greenhouse gas, but also cause traffic problem and the traffic jam. we can go out by the communal transport. In a word, we should do our best to protect our world, no matter how little you do,you have made a contribution to our one and only motherland—our world.

12. Thank you!