Urban geography

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Across
  1. 2. transport
  2. 4. to fall
  3. 7. spreading
  4. 9. dirty water
  5. 10. new settlements out of the city
  6. 12. loud sounds
  7. 14. where people live
  8. 15. locked
  9. 16. centre
  10. 17. the increase of importance of large cities
  11. 18. the throw back of heat
Down
  1. 1. dirtying the environment
  2. 3. industry and trade
  3. 5. from combustion processes
  4. 6. close together
  5. 8. to store
  6. 11. when you have nothing to eat
  7. 13. networks: important for the society and economy