Science

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Across
  1. 3. cold-blooded vertebrate animals like snakes
  2. 7. animals that feed their children with milk
  3. 9. the butterfly is born there
  4. 10. a little frog
  5. 12. cold-blooded vertebrate animals like frogs
Down
  1. 1. wet
  2. 2. a young butterfly
  3. 4. children of animals
  4. 5. newborn frog
  5. 6. something that covers animals
  6. 8. something that covers fishes
  7. 11. lungs of fish