Nature

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Across
  1. 4. gases in the atmosphere
  2. 7. A layer of forest
  3. 8. has trees, rivers, mountains
  4. 9. Is long and tall
  5. 10. most burnt fossil fuel
Down
  1. 1. Is flowing and sometimes deep
  2. 2. the permanent removal of trees
  3. 3. is an animal in the artic
  4. 5. is generally steeper than a hill
  5. 6. Usually found on cold water and only the top part of it can be seen