for school

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Across
  1. 3. can be calculated with KM
  2. 7. we fly on it
  3. 8. yeah here a free one
  4. 9. Air Defense System(it maybe not is what i think it is)
  5. 10. IT BURNS YOU
  6. 12. Mine and Craft
  7. 15. it is invisible
  8. 16. Man's best friend
  9. 18. Likes to chase mice
  10. 19. Large marsupial
Down
  1. 1. Flying mammal
  2. 2. it is a cuntry
  3. 4. It holds us on earth
  4. 5. It explodes
  5. 6. Large marsupial
  6. 11. Has a trunk
  7. 13. it is used for halloween
  8. 14. Jumping platforms
  9. 17. Likes cheese in cartoons