Classification

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Across
  1. 4. Vertebrate animals that live underwater
  2. 7. Swedish scientist who developed binomial nomenclature; Carl _________
  3. 10. Vertebrate animals that produce milk for their offspring
  4. 11. Invertebrate animals with eight legs
  5. 12. Invertebrates such as lobsters, crabs and woodlouse
  6. 13. Air-breathing vertebrate animals that are covered in scales
Down
  1. 1. Invertebrate animals that include sea urchins and sand dollars
  2. 2. Segmented worms, such as earthworms, are in this group
  3. 3. Vertebrate animals that go through metamorphosis
  4. 5. Invertebrate animals with a soft unsegmented body. Many of them have shells.
  5. 6. Invertebrate animals with many legs, such as a millipede
  6. 8. Invertebrate animals with six legs and three body parts
  7. 9. Vertebrate animals that have feathers covering their bodies