Across
- 1. Precipitation that is usually-acidic
- 4. Different cultures in one society
- 6. reasons
- 8. Different ethnic backgrounds
- 13. People moving to a new location for
- 15. Solar,wind,hydro energy
- 19. The structure of populations
- 20. A place where is heavily populated
- 21. Number of things
Down
- 2. Change in relationships and experiences with new media
- 3. The shape of a settlement
- 5. Making an area more urban
- 7. A culture becoming dissimilar-overtime
- 9. Natural fuel
- 10. Spread of ones culture
- 11. A creation to improve efficiency
- 12. The action of doing something-native
- 14. Reasons of why people either want-to-leave or go to a different place
- 16. A mix of smoke and fog
- 17. Outside part of a city
- 18. A huge space of flat land