In some countries, building is restricted or completely banned in the area of farmland or woods and parks which surround a community. .......................................................

2. More and more companies are using boxes, cartons, and cans which can easily be decomposed by organisms such as bacteria, or by sunlight, sea, water, etc., for their products. .......................................................

3. The burning of some fuels creates carbon dioxide, carbon monoxide, sulfur dioxide, and methane which rise into the atmosphere. .......................................................

4. Farmers have cleared acres of thick wooded land in tropical regions where the precipitation is very high to provide pasture for their cattle. .......................................................

5. Planting trees and bushes can provide some protection from the gradual wearing away of soil........................................................

6. We should all try to process waste material so that it can be used again........................................................

7. Many shops now sell fruit and vegetables which are cultivated naturally, without using any chemical fertilizers or pesticides. .......................................................

8. This bread is made from wheat which has been altered at a molecular level so as to change certain characteristics which can be inherited. .......................................................

9. The process of removing trees from an area of land is destroying millions of acres of woodland every year. .......................................................

10. Polluted precipitation which kills trees often falls a long distance from the source of the pollution. .......................................................

11. Human activity has had a devastating effect on the living things, both large and small, in many parts of the word. .......................................................

12. The gases and other substances which come from factories using oil, coal, and other fuels which are the remains of plants and animals can cause serious damage to the environment. .......................................................

13. Don't drink that water. It's been made dirty by something being added to it........................................................

14. Friends of the Earth, Greenpeace, and other people concerned with protecting the environmentare holding an international summit in Geneva next month. .......................................................

15. The heating up of the earth's atmosphere by pollution is threatening life as we know it. .......................................................