Population Density

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Across
  1. 1. To be alone
  2. 4. Largest hot desert, in Africa
  3. 5. River in India
  4. 6. Many people live in this in a place with high population density
  5. 7. For there to be very little space
  6. 8. The making of deserts
  7. 10. High apartment buildings
  8. 13. Surrounded by land
  9. 14. Poor place in India with high population density
  10. 16. To dirty a place
Down
  1. 2. Poorer part of Hong Kong
  2. 3. Richest part of Hong Kong
  3. 6. People who live on streets
  4. 9. Too many people in one place
  5. 11. To bring water into a place
  6. 12. Boats which people live on
  7. 15. Slum in India