IDNStudy.com, ang komunidad ng pagbabahagi ng kaalaman. Magtanong at makatanggap ng eksaktong sagot mula sa aming mga bihasang miyembro ng komunidad.
Answer:
Geologists have divided Earth's history into a series of time intervals. ... Eons are divided into smaller time intervals known as eras. In the time scale above you can see that the Phanerozoic is divided into three eras: Cenozoic, Mesozoic and Paleozoic.