Geography crossword puzzle

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Across
  1. 3. — an edge line separating two countries/areas
  2. 5. — capital city of Canada
  3. 8. — movement of people from one place to another
  4. 9. — capital city of Australia
  5. 10. — the shape and features of land (hills, plains, etc.)
  6. 12. — country and island-continent in Oceania
  7. 13. — capital city of Japan
  8. 15. — famous white marble mausoleum in India
  9. 17. — something a place can use or rely on (e.g., water, minerals)
  10. 18. — the average weather conditions of a place over time
  11. 19. — ancient stone tomb structures
Down
  1. 1. — the number of people living in an area
  2. 2. — how many people (or things) are in a given area
  3. 4. — famous landmark in Paris, France
  4. 6. — country in East Africa
  5. 7. — long wall built in ancient China
  6. 9. — capital city of Egypt
  7. 11. — country in South America
  8. 14. — capital city of Canada
  9. 16. — capital city of Brazil