Biology Unit 8

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Across
  1. 8. kind of water sharks usually live in
  2. 9. begin life w/ gills but develop lungs
  3. 11. a hard external covering of animal body
  4. 13. they resemble tusks in appearance
  5. 14. word that means "able to float"
  6. 15. a scorpion is an example of a
  7. 16. have 2 shells that are hinged
  8. 19. class that sharks are in
  9. 20. the fin located on a shark's back
  10. 22. class of mollusca that includes octopus
Down
  1. 1. crustaceans go through this process
  2. 2. have a one piece shell that's coiled
  3. 3. type of scales that cover a shark's body
  4. 4. what kind of life do amphibians live
  5. 5. classification of having no spine
  6. 6. a large body of fresh water
  7. 7. they resemble a knight's armor
  8. 10. phylum containing oysters, clams, & squids
  9. 12. crustacean people eat dipped in butter
  10. 17. what phylum are crustaceans
  11. 18. how many feet long are most sharks?
  12. 21. Are mollusk bodies soft or hard?