Geography crossword puzzle

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Across
  1. 3. What is the number of people living in a unit area of land called?
  2. 4. What is a built up area called?
  3. 7. What is the pollution caused by an increase in LED usage?
  4. 9. What is a physical area on the earth’s surface called?
  5. 11. What are the advantages of going to a city called?
  6. 13. What is a physical area on the Earth’ surface called?
  7. 15. Refers to our surroundings and can either be physical or human.
  8. 16. What is the increase in the proportion of people living in urban areas called?
  9. 17. What are the disadvantages of going to a city called?
  10. 18. What is a multicultural society with many people from diverse cultural backgrounds called?
  11. 19. What is the area of the earth’s surface that holds special meaning for people?
  12. 21. What is the pollution caused by leakage fuel storage tanks into rivers?
  13. 22. What is poor air quality affecting half the world’s urban population called?
Down
  1. 1. What is the pollution primarily caused by the burning of fuelwood and paraffin for cooking and heating?
  2. 2. Consist of living and non-living things that are found naturally.
  3. 5. What job opportunities are called?
  4. 6. up areas What is an area with dense transport networks and densely packed buildings called
  5. 8. What is the environment that has not been affected by people?
  6. 10. What is the environment where people live on farms and villages called?
  7. 12. What is the movement of people from rural to urban areas called?
  8. 14. Refers to surface runoff that results from melting snow.
  9. 20. What is the pollution related to and primarily caused by unnecessary honking called?