PBP puzzler

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Across
  1. 2. shorthand for tiny plastics
  2. 4. annual organic expo
  3. 6. connects Sedgwick and Deer Isle
  4. 8. local bread maker
  5. 10. town with mudflats
  6. 12. when leaves turn
  7. 16. local latitude
  8. 17. biggest animal in Maine
  9. 18. school zone speed limit
  10. 19. tiny biting critter
  11. 21. abandoned mine
Down
  1. 1. non-native purple flower
  2. 3. lobster capital
  3. 5. sheep dog ______
  4. 7. highest peak on peninsula
  5. 9. state bird
  6. 11. super fruit
  7. 13. useful farm vehicle
  8. 14. stealthy hunting implement
  9. 15. town with co-op
  10. 20. tunicate nickname
  11. 21. lobsters go in them