Search Results for: Reptiles
vertebrate and invertebrate there are two main classes of sea animals: vertebrates and invertebrates. a vertebrate is an animal with a segmented spinal column and a brain enclosed in a skull or cranium. this includes mammals, birds, reptiles, amphibians, and fish. by comparison, invertebrates are animals
vertebrate and invertebrate there are two main classes of sea animals: vertebrates and invertebrates. a vertebrate is an animal with a segmented spinal column and a brain enclosed in a skull or cranium. this includes mammals, birds, reptiles, amphibians, and fish. by comparison, invertebrates are animals...
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