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.

Birds were a major widespread during this time period therefore the answer is the last option

The return of the wolf to yellowstone national park will probably affect the bird population to some degree, not significantly. while wolves will hunt birds when necessary, they prefer to hunt larger prey. the bird population will most likely only be affected when hunting is scarce for the wolves. birds of prey will also probably not be affected as much as other birds who spend more time on the ground hunting for food as the tend to spend more time in the air or in trees since they do not need to stay on the ground for long due to the nature of the way they hunt.