A big fat crossword

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Across
  1. 5. a dead body wrapped in toilet paper
  2. 8. a white fluffy powder made of ice
  3. 9. a marsupial who's home has been destroyed by bush fires
  4. 10. taking a photo of yourself
  5. 12. the manager of banks lodge
  6. 15. a device that can make mathematical equations really fast
  7. 18. 2020's most sold item
  8. 19. Man's best friend
Down
  1. 1. Large marsupial
  2. 2. Has a trunk
  3. 3. to make sure something does not get damaged or hurt
  4. 4. a baby dog
  5. 6. the red planet that Elon musk really wants to go to
  6. 7. a lovely instrument that uses hammers to hit strings
  7. 11. a smelly gas that you're body lets out of the bottom
  8. 13. something Einstein said was relative
  9. 14. Likes to chase mice
  10. 16. ball, a thing you'll see at a party or ______
  11. 17. Flying mammal