Across
- 3. The weather conditions of a region.
- 6. something that can be thrown away.
- 11. the process by which fertile land is turned into deserts.
- 12. contamination
- 13. the complete dying out of species.
- 14. to keep something safe.
Down
- 1. to reduce something.
- 2. to use up.
- 4. to take something.
- 5. refers to the number and variety of plant and animal species that exist in a particular. environmental area in the world generally.
- 7. Something that is able to decay naturally and harmlessly.
- 8. something dangerous.
- 9. a place where animals and plants live.
- 10. the process by which the forests are cut down.