Geography

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Across
  1. 3. made from petroleum, roads surface
  2. 7. Milky Way is one of them
  3. 11. a big island next to Great Britain
  4. 14. the longest river on Earth
  5. 15. could be snowy, rock, muddy
  6. 17. the biggest ocean
  7. 18. the second biggest continent in the world
Down
  1. 1. cold area around the North Pole
  2. 2. bigger than a lake, smaller than an ocean
  3. 4. insular state of the USA
  4. 5. at the night sky
  5. 6. 21% of the atmosphere
  6. 8. city with Big Ben
  7. 9. covers over 70% of Earth surface
  8. 10. green area at the dessert
  9. 12. swift water
  10. 13. part of the USA at the farthest north
  11. 16. city of a country with a government headquarter