Environment

2. a mass of rock and earth falling unexpectedly
3. a violent wind that has a circular movement
6. damage caused to water, air, etc. by harmful substances or waste
8. a sudden violent movement of the earth's surface
9. a long period when there is little or no rain
12. a type of animal or plant that might stop existing because there are only a few of that type alive
14. a large amount of ice, snow, and rock falling quickly down the side of a mountain
16. a gradual increase in world temperatures caused by gases
17. how high is the sea

1. (v.)to continue to live or exist, especially after coming close to dying or being destroyed or after being in a difficult or threatening situation
4. the process of collecting and changing old paper, glass, plastic, etc. so that it can be used again
5. changes in the world's weather, in particular the fact that it is believed to be getting warmer as a result of human activity
7. a thick layer of ice that permanently covers an area of land
10. energy that is produced using the sun, wind, etc.
11. good for your health
13. the gas formed when carbon is burned, or when people or animals breathe out
15. a large amount of water covering an area that is usually dry