The Song of the Humpback

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Across
  1. 3. Knowing or noticing something. (adjective)
  2. 4. To take part in an activity with someone or something. (verb)
  3. 7. Something that has never been seen or understood before. (adjective)
  4. 9. Something difficult and made of many parts. (adjective)
  5. 10. A high score or achievement, or an audio/video file. (noun)
  6. 11. Showing interest in something in a questioning way. (adverb)
Down
  1. 1. A captured sound or video. (noun)
  2. 2. To go through an event personally. (verb)
  3. 5. Something done only one time. (adjective)
  4. 6. Seeming to be true but not completely certain. (adverb)
  5. 8. A period of the year with specific weather conditions. (noun)