Environment

2. a large amount of water covering an area that is usually dry
4. able to decay naturally and harmlessly
7. the general weather conditions usually found in a particular place
8. rain which contains large amounts of harmful chemicals as a result of burning substances such as coal and oil (2 words)
10. describes a form of energy that can be produced as quickly as it is used (2 words)
11. the cutting down of trees in a large area; the destruction of forests by people.
12. strong, unpleasant and sometimes dangerous gas or smoke
13. the air, water and land in or on which people, animals and plants live

1. a gradual increase in world temperatures caused by polluting gases such as carbon dioxide which are collecting in the air around the Earth and preventing heat escaping into space (2 words)
3. a long period when there is little or no rain.
5. the process by which land changes into desert
6. the process of conserving energy (2 words)
9. an increase in the amount of carbon dioxide and other gases in the atmosphere which is believed to be the cause of a gradual warming of the surface of the Earth (2 words)