Geography terms

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Across
  1. 1. mountain opening in earth's crust
  2. 3. flat land near river prone to flooding
  3. 6. section of earth's crust
  4. 8. mound of sand
  5. 9. the end location of a river
  6. 10. winding pattern of a river
  7. 12. where river systems separate
  8. 14. ocean wave resulting from earthquake
  9. 15. water-saturated land area
  10. 17. depression formed by volcano or meteor
  11. 18. fracture in earth's crust
  12. 19. layer of gasses surrounding the earth
Down
  1. 2. joining of two rivers
  2. 4. island chain
  3. 5. any form of water in the atmosphere
  4. 7. flat tropical seasonal grassland
  5. 11. coastal area with mixed salt and fresh water
  6. 13. movement along a fault line
  7. 16. polar frozen land area