Crossword

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Across
  1. 2. travel across countries
  2. 4. 2 wheel vehicle with an engine
  3. 7. 4-wheel vehicle
  4. 9. an act of traveling from one place to another
  5. 10. visible
  6. 12. a participatory member of a political community
  7. 13. good for everyone
  8. 15. is what we use to travel
  9. 17. basic facilities such as buildings, communications, etc…
Down
  1. 1. protected
  2. 3. thing that has harmful substances
  3. 5. doesn't cause pollution
  4. 6. quick access
  5. 8. fast
  6. 11. not expensive
  7. 14. vehicles moving on a road or public highway
  8. 15. road where transportation goes on
  9. 16. contains a lot of passengers
  10. 18. burned to produce heat or power.