Sigma Season 11 challenge

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Across
  1. 3. branch of science behind motion and force
  2. 4. diabetic's essential
  3. 5. cool, in slang
  4. 6. bacon lettuce tomato sandwich
  5. 8. large flightless bird
  6. 9. mythical sea monster
  7. 10. When a player knocks down all ten pins with the second ball in a frame
  8. 11. black and white instrument
  9. 12. Country that could also be a boys name
Down
  1. 1. the opposite of a land pickle
  2. 2. army of disabled people
  3. 6. a type of flying insect or a type of knife
  4. 7. Historic event involving a giant leap for mankind