Becca Franks Puzzle

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Across
  1. 2. Evolutionary history of species
  2. 5. Ancient “ladder” ranking living beings
  3. 6. Parasites living on a host’s surface
  4. 8. Group missing some descendants
  5. 9. Traditional term for aquatic vertebrates
  6. 11. Four-limbed vertebrate
  7. 12. Farming of aquatic organisms
Down
  1. 1. Fish that removes parasites from other fish
  2. 3. Evolutionary descent line
  3. 4. Diagram showing relationships among all life
  4. 7. Human-centered worldview
  5. 10. Group including octopuses, squids, cuttlefish