UNIT 6

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Across
  1. 4. an area with lots of mountians
  2. 5. cap a solid object made out of ice
  3. 7. describes something that is dirty and dangerous to use
  4. 8. smaller that a river
  5. 9. larger that a lake
  6. 12. an area with lots of trees
  7. 14. a place with lots of sand and no water
Down
  1. 1. an "exotic" forest
  2. 2. an area between mountains
  3. 3. nature around us
  4. 5. a land surrounded by water
  5. 6. an ecological problem caused by large quantities of water
  6. 10. an ecological problem caused by high temperatures
  7. 11. a place near the sea with lots of sand
  8. 13. when the ice becomes water it...