Question

Which animal group benefited significantly during the Cenozoic era by being able to give birth to live young?


birds


mammals


amphibians


lobe-finned fishes

Answer 1

Mammals significantly benefited during the Cenozoic era by being able to give birth to live young. This reproductive strategy allowed for greater survival of offspring in various environments compared to egg-laying, particularly in the diverse and changing habitats that characterized the Cenozoic.