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