Question

The ability to regulate what, which is possessed by mammals, was an advantage as earth’s climate went through sudden and dramatic changes?

Answer 1

body temperature

Mammals have the ability to regulate body temperature. This is an advantage, as Earths climate went through sudden and dramatic changes. Mastodons, saber tooth tigers, hoofed mammals, whales, primates and eventually humans all lived during the Cenozoic Era   Figure below  .