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What vertebrate class conceives their young within the reproductive tract of the mother and, after birth, nourishes them with milk produced by mammary glands? A) Aves B) Amphibia C) Reptilia D) Mammilia
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What vertebrate class conceives their young within the reproductive tract of the mother and, after birth, nourishes them with milk produced by mammary glands?

A) Aves
B) Amphibia
C) Reptilia
D) Mammilia

User Amir Mehler
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D) Mammalia

Mammals are the vertebrates within the class Mammalia (from Latin ‘breast’). They posses a neocortex, hair, three middle ear bones and mammary glands.
User Ilian Andreev
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