Question

1. which era is known as the age of mammals?

○ cenozoic
○ triassic
○ mesozoic
○ ordovician

Explanation:

The Cenozoic Era is defined by the diversification and dominance of mammals after the extinction of dinosaurs at the end of the Mesozoic Era. The Triassic is part of the Mesozoic (Age of Reptiles), the Mesozoic is the Age of Reptiles/Dinosaurs, and the Ordovician is an early Paleozoic era dominated by marine invertebrates.

Answer:

A. Cenozoic