Environment

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