Across
- 3. a long period when there is little or no rain
- 4. a large amount of water covering an area that is usually dry
- 6. the process by which land changes into desert
- 7. the general weather conditions usually found in a particular place
Down
- 1. a sudden violent movement of the Earth's surface, sometimes causing great damage
- 2. damage caused to water, air.... by harmful substances or waste
- 3. the cutting down of trees in a large area; the destruction of forests by people
- 5. able to decay naturally and harmlessly