On the second level of mammalian evolution, that ________ mammals or marsupials, the eggs are practically yolkless.
A. to the pouching
B. of the pouched
C. in the pouches
D. by the pouchable
Answer:B
On the second level of mammalian evolution, that ________ mammals or marsupials, the eggs are practically yolkless.
A. to the pouching B. of the pouched C. in the pouches D. by the pouchable