Geography

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Across
  1. 5. Moving mass of ice
  2. 7. Ring shaped reef or island(s)
  3. 8. Waterless, dry & barren land
  4. 9. Dense tropical forest
  5. 12. Where lava erupts from
  6. 13. Land along edge of body of water
  7. 15. Treeless arctic biome
Down
  1. 1. Lake used as water supply
  2. 2. Region of elevated land
  3. 3. Group of islands
  4. 4. Hot spring water spray
  5. 6. Permanently frozen soil
  6. 10. Long, narrow water inlet
  7. 11. Floating chunk of ice
  8. 14. Deep gorge between cliffs