Wieso!?

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Across
  1. 2. give an opinion
  2. 6. the current problem with forests
  3. 9. leave / quit something
  4. 11. weather makes the big changes overall
  5. 15. too many people who live in the same town.
  6. 18. a loop-hole.
  7. 19. leaving your home-country for good
  8. 20. minimal money / broke (country)
Down
  1. 1. something is turning into a desert
  2. 3. Children are used for work.
  3. 4. a person who lives in a civil town
  4. 5. the low-baller.
  5. 7. "i get paid six-..... salary a month."
  6. 8. dirt
  7. 10. food problems
  8. 12. water that is under the ground
  9. 13. dysgraphia
  10. 14. if you commit a ____ you are a criminal.
  11. 16. problem as a definition
  12. 17. a problem overall for people without homes