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Pre AP Biology. Animal Kingdom Vertebrates (8.16) Part 1. Chordata Evolution. Vertebrate Basic Body Structure. Cephalization. Axial Skeleton. Appendages of the Skeleton. Vertebrae and discs. Fish – Chondroichthyes Cartilaginous fish. Fish – Osteoichthyes Boney Fish.
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Pre AP Biology Animal Kingdom Vertebrates (8.16) Part 1
Pre AP Biology Animal Kingdom Vertebrates (8.16) Part 2
Pre AP Biology Animal Kingdom Vertebrates (8.16) Part 3
Most Reptiles have a Three Chambered HeartBirds have four chambers
Pre AP Biology Animal Kingdom Vertebrates (8.16) Part 4