Australia

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Across
  1. 2. Gum tree, koala's favorite food (10 letters)
  2. 4. Egg-laying mammal with a duck-like bill (8 letters)
  3. 5. Vast, remote interior region (7 letters)
  4. 7. Eucalyptus-munching tree-dweller (5 letters)
  5. 9. Iconic savory spread (8 letters)
  6. 10. Smiling marsupial from Western Australia (6 letters)
  7. 12. Hopping marsupial, national symbol (8 letters)
  8. 13. Wild canine native to Australia (5 letters)
  9. 16. Indigenous wind instrument (10 letters)
  10. 18. Aussie slang for outdoor cooking event (6 letters)
  11. 19. Large flightless bird on the coat of arms (3 letters)
  12. 20. Aussie term for flip-flops (6 letters)
Down
  1. 1. Smaller cousin of the kangaroo (7 letters)
  2. 3. Famous red rock formation, also known as Ayers Rock (5 letters)
  3. 6. Curved throwing stick that returns (9 letters)
  4. 8. Swagman's bundle in Aussie folk song (7 letters)
  5. 11. Famous Sydney beach (5 letters)
  6. 14. Australian and New Zealand Army Corps (5 letters)
  7. 15. Burrowing marsupial (6 letters)
  8. 17. Isolated pond in a dry riverbed (9 letters)