Across
- 4. the protection of plants and animals from the damaging effects of human activity
- 8. the cutting down of trees in a large area, or the destruction of forests by people
- 9. the fact of soil or stone. being gradually damaged and removed by the waves, rain, or wind
Down
- 1. all the living things in an area and the way they affect each other and the environment
- 2. the number and types of plants and animals that exist in a particular area
- 3. the whole mass of air that surrounds the Earth
- 5. damage caused to water, air, etc.
- 6. animals or plants that may soon not exist because there are very few now alive
- 7. a situation in which something no longer exists