Vertebrite Animal

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Across
  1. 2. to help reptiles prevent water loss
  2. 4. most reptiles egg
  3. 6. Amphibians skin condition
  4. 7. Marine mammal
  5. 9. arespiratory organ of fish
Down
  1. 1. flying frogs
  2. 3. regularting body temperature of bird
  3. 5. fish have it for swimming balance and stirring
  4. 8. baby birds hatch from it
  5. 10. mammal breathe through this organ