What is the definition of marsupial?
A)having a placenta, the organ that nourishes young until birth
B)a tube that connects an unborn baby to its mother for nourishment
C)a mammal which gives birth to a fetus that moves into a pouch for protection and nourishment
D)the gland of a mammal that produces milk for the young
E)a mammal that has just one passage for elimination and egg laying
C) a mammal which gives birth to a fetus that moves into a pouch for protection and nourishment.
More than _____ percent of all mammals are placental.
60
50
10
100
90