Placental Mammals
Science / Biology / Placental Mammals
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Placental Mammals: One of three groups of mammals that carry their young in the mothers body for long periods during which the fetus is nourished by the placenta. Humans are placental mammals.
Placenta: An organ produced from interlocking maternal and embryonic tissue in placental mammals; supplies nutrients to the embryo and fetus and removes wastes.
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