1. Marsupials
Marsupials are pouched mammals. Their young are born in an immature state after a relatively short developmental period in the mother's uterus. (This is called the gestation period.) The newborn marsupial crawls into a pouch or onto a pouch-like area on the mother's abdomen. Here it attaches itself to one of her nipples and remains until it is well formed and has grown much larger ... ...
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- Grade Level: Undergraduate