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Teaching Mammal reproduction

Mammal reproduction

Monotremes can lay eggs, but most mammals give birth to live young. Mammals can be marsupial, where the embryo is born at an immature stage and develops in the pouch. Mammals can be placental, where substances are passed from the mother to the fetus so that it can stay longer in the womb.

CK-12 (Middle School)


How does reproduction among mammals differ?
RST.2 - Main Ideas


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