Select all of the answers that apply.

why do some people argue that the cenozoic era should not be called the "age of mammals"?

there are no mammals present during this era.
flowering plants are just as common during this era.
insects are equally as abundant during this era.
birds are just as widespread as mammals during this era.

The answer is There are no mammals present during this era.  The studies revealed that animals on this era were mostly birds, reptiles, and amphibians. Birds were more dominantly known as the big predator animals in this period. It was only during the middle last part and late period of the Cenozoic period when the mammals came to populated and evolved. Also, it was the period when the man finally came.

Maybe c? sorry if im wrong