Becoming cold-blooded is not an adaptation made by mammals during the Cenozoic era. Mammals are warm-blooded (endothermic) animals, and throughout the Cenozoic, they maintained their warm-blooded physiology. The other options, such as specialization of teeth, specialization of limbs, and increasing in size, are indeed adaptations that mammals underwent during this period to adapt to various environments and ecological niches.
Which is not an adaptation made by mammals during the Cenozoic era?
specialization of teeth
becoming cold-blooded
specialization of limbs
increasing in size
1 answer