geography crossword puzzle

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Across
  1. 1. 7.a competition or struggle
  2. 4. 37.to concentrate attention or effort
  3. 5. 10.reversed in order relation or action
  4. 9. 19.the height of a land surface above the level of the sea
  5. 11. 36.to ebb and flow in waves
  6. 12. 27. to be greater than
  7. 13. 23.to improve or increase
  8. 17. 29.to make use of a resource
  9. 18. 24.gigantic exceedingly large
  10. 19. 32.to remove
  11. 21. 28.to demonstrate or show publicly
  12. 24. 31.arising outside of
  13. 25. 9.to give or supply
  14. 26. 5.an area drained by a river and its tributaries
  15. 27. 2.free from error
  16. 29. 26. to judge approximately the size or value of something
  17. 30. 30.to put someone at risk for harm or injury
  18. 31. 4.excessively dry
  19. 33. 39.to produce
  20. 34. 16.recognizably different
  21. 35. 38.besides in addition
Down
  1. 1. 11.an overthrow of the government
  2. 2. 8.unchanging
  3. 3. 17.to write to provide information
  4. 6. 21.to leaves ones own country to settle permanently in another
  5. 7. 6.weather patterns typical for an area over a long period of time
  6. 8. 14.to obtain something from
  7. 10. 12.to bring into being or cause to exist
  8. 11. 33.something that actively contributes to the production of a result
  9. 14. 13.to become less in amount
  10. 15. 1.to give up completely
  11. 16. 18.a mound or ridge of sand formed by the wind
  12. 20. 34.a crack or break in earths crust
  13. 22. 35.to have characteristic or as prominent attribute
  14. 23. 40.a process by which glaciers form and spread
  15. 24. 25. to make sure or certain
  16. 28. 20.a ban on trade
  17. 30. 22.usable power
  18. 31. 3.to make fit to changing circumstances
  19. 32. 15.a high point or ridge that determines the direction rivers flow