Our changing earth

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Across
  1. 4. Waterfall between USA and Canada
  2. 6. Raised bank of a river
  3. 8. Waterfall between Zambia and Zimbabwe
  4. 9. Type of commonly found in deserts
  5. 12. Formed when a river deposits its load near the sea
  6. 13. Large bend in river
  7. 15. Place where earthquake originates on the surface of earth
  8. 16. Forces that work outside the earth
  9. 18. Sand gets deposited over large distances, it is called?
Down
  1. 1. Glacial deposits are called
  2. 2. First stage of erosion in sea cliff(3,5)
  3. 3. Country where Loess is commonly found?
  4. 5. Cut off lake
  5. 7. Forces that work inside the earth
  6. 10. Third stage of erosion in sea cliff
  7. 11. Highest waterfall in the world
  8. 14. Second stage of erosion in sea cliff(3,6)
  9. 17. Place where earthquake originates inside the earth