social studies crossword puzzle

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Across
  1. 1. to become a part of a group, community or society
  2. 6. physical ability to reproduce
  3. 7. people living by hunting down animals
  4. 8. production of offspring
  5. 10. someone who leaves their country for fears over their safety
  6. 14. things we need to live, or use to earn a living
  7. 16. amount of people living in a place
  8. 19. everything around you
  9. 20. not alot of people living there
  10. 24. divided continents into political units
  11. 25. cutting down forests
Down
  1. 2. place where people live
  2. 3. person who comes from another country
  3. 4. the number of babies born per thousand women per year
  4. 5. the era of inventing new machines
  5. 9. a type of plant or animal
  6. 11. place where farmers trade
  7. 12. the number of people who die per thousand every year
  8. 13. area that is mainly countryside
  9. 15. when people move from one place to another
  10. 17. a factor that encourages people to leave a place
  11. 18. a person living outside their nameland as a result of danger
  12. 21. a factor that attracts people to move into a new place
  13. 22. people who study population
  14. 23. how many years a person can live