Across
- 3. the process by which land changes into desert
- 5. able to decay naturally and harmlessly
- 7. a large amount of water covering an area that is usually dry
- 8. the destruction of forests by people
- 10. species being destroyed so that they no longer exist
Down
- 1. the general weather conditions usually found in a particular place
- 2. the number and variety of plant and animal species that exist in a particular environmental area
- 4. a sudden violent movement of the Earth's surface
- 6. a long period when there is little or no rain
- 9. the power from something such as electricity or oil