The nonavian reptile scale is
A) mostly made of beta keratin.
B) derived from dermis.
C) contains chromatophores.
D) an important protective surface.
E) All of the choices are correct.
Correct Answer:
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A)supplying nutrients
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A)Permian
B)Triassic
C)Carboniferous
D)Jurassic
E)Cretaceous
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Q21: The dermal layer of the reptile skin
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