Question

JThe three eras within the Phanerozoic eon are Paleozoic (ancient life), _____ (middle life), and Cenozoic (recent life).


Archean


Jurassic


Mesozoic


Proterozoic

Answer 1

The three eras within the Phanerozoic eon are Paleozoic (ancient life), **Mesozoic (middle life)**, and Cenozoic (recent life).