The future of travel

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Across
  1. 2. a large bag you use for carrying clothes when you travel
  2. 4. the place where someone is going or being sent
  3. 12. a vehicle used to travel into space
  4. 13. to have enough money
  5. 14. the amount of carbon dioxide produced by your activities
  6. 15. a place where you can stay, such as a hotel or apartment
  7. 17. synonym with adventure
  8. 19. a person who shows other people around interesting places
Down
  1. 1. our surrounding: air, water, and land
  2. 3. able to continue without harming nature
  3. 5. not real, usually seen through computer
  4. 6. a new idea, method, or invention
  5. 7. a famous building or place that is easy to recognize
  6. 8. make people feel at ease
  7. 9. damage caused to the air, water, or land by harmful substances
  8. 10. using energy from the sun
  9. 11. a strong desire to learn or know something new
  10. 16. the business of providing services for people on holiday
  11. 18. great comfort or pleasure, often expensive