Across
- 3. poisonous or dirty substances that are polluting the water, air or land somewhere
- 5. ...effect the problem caused by increased quantities of gases such carbon dioxide in the air
- 6. an extremely violent wind or storm
- 8. a shaking of the ground caused by movement of the earth's crust
- 11. responsible for causing the greenhouse effect
- 13. it's extremely destructive form of pollution, and the enviroment suffers from it's effects
- 14. thick layers of ice and snow that cover the North and South Poles
- 15. long period of time during which no rain falls
Down
- 1. the average level of the sea with respect to the land
- 2. the gradual rise in the earth's temperature
- 4. this mud or mud-stone flow suddenly emerging in the course of mountain rivers as a result of rainfall, rapid melting of glaciers or seasonal snow cover
- 7. all trees are cut down or destroyed
- 9. a large amount of water covers an area which is usually dry, for example when a river flows over its banks or a pipe bursts
- 10. a very large wave, often caused by an earthquake, that flows onto the land and destroys things
- 12. the death of all animal or plant remaining living members