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Classification of Vertebrates loading

Vertebrates consist of five groups: fishes, birds, reptiles, mammals and amphibians.

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Advanced Students matched to this level are ready for material that requires superior performance and mastery.
  • Real World Application
    From Fins to Feet

    From Fins to Feet

    by CK-12 //advanced
    Discover how a "living fossil", the coelacanth, may hold clues to the evolution of life on land.
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