Nature

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Across
  1. 2. Huge body of salt water
  2. 3. Water falling over a steep edge
  3. 5. Area where many trees grow together
  4. 8. Very high natural area of land
  5. 9. Very dry area with little rainfall
  6. 12. Land completely surrounded by water
  7. 13. Deep valley with steep rocky sides
  8. 14. Mountain that can release lava
Down
  1. 1. Large mass of slowly moving ice
  2. 4. Large area covered with trees
  3. 6. Time when the sun disappears below the horizon
  4. 7. Natural stream of flowing water
  5. 8. Open area covered with grass and flowers
  6. 10. Colorful arc seen in the sky after rain
  7. 11. Low land between hills or mountains