Explanation

A marsupium, or pouch, is a specialized structure in marsupials (like kangaroos, koalas, and opossums)

where the young are carried and continue to develop after birth.

Rearing the young ones:

The pouch provides protection and warmth, ensuring the young can continue their development after birth.

Feeding the young ones:

The young have access to the mother's milk while in the pouch.