Across
- 4. a period of dry weather
- 6. strong and dangerous gas or smoke
- 7. animals or plants which may soon not exist
- 8. the change of forested lands to non forest uses.
- 9. a layer of oilt that is floating over a large area of the surface of the sea
Down
- 1. a place where nature in general normally lives
- 2. an animal who is in danger of becoming extinct
- 3. a fuel that is formed in the Earth from plant etc...
- 5. a product of decomposition of organic matter and of the carbonization of coal.