Earth Science

102 6. Which leather of each sentence that is true about Cenozoic life.

a. The Cenozoic period is often called the "age of mammals."

b. The Cenozoic period could be called the "age of flowering plants."

c. Birds that feed on seeds and fruits evolved rapidly during the Cenozoic era.

d. Grasses developed and spread rapidly over the plains during the Cenozoic era.