What eon has the most life?

The Phanerozoic Eon, which began around 541 million years ago and continues to the present, is the eon with the most diverse and abundant life. This eon is characterized by the emergence of complex multicellular organisms, including plants, animals, and fungi. The Phanerozoic is divided into three eras: the Paleozoic, Mesozoic, and Cenozoic, each marked by significant evolutionary developments and mass extinctions. Life flourished during this time, leading to the biodiversity we see today.