Geography

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Across
  1. 4. Managing resources
  2. 7. Batty area
  3. 9. Little House on this?
  4. 11. Erupting mountain
  5. 12. Very wet tropical area
  6. 13. Sky destruction (2 words)
Down
  1. 1. May be Grand
  2. 2. Niagara is one
  3. 3. Permafrost area
  4. 5. Island string, like Hawaii
  5. 6. Variety of flora and fauna
  6. 8. Yellowstone is one
  7. 10. Wetlands
  8. 13. Especially parched