Earth Day Crossword Puzzle

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Across
  1. 3. Chirp
  2. 5. Flutter
  3. 6. *crickets*
  4. 7. Wooooosh
  5. 10. Gurgle
  6. 12. AHHHHH
  7. 13. Squelch
  8. 14. Bzzzzz
Down
  1. 1. Tweet
  2. 2. Rustle
  3. 4. Quack
  4. 8. Gobble
  5. 9. Squeak
  6. 10. Patter
  7. 11. Blub
  8. 15. Hoot