Black bears are suited to living in a variety of climates, from very cold to hot. Which term best describes how a black bear reacts to different temperatures?

The answer is hibernation. Hibernation is a state of greatly reduced metabolic activity and lowered body temperature adopted by certain mammals so as to adapt in adverse winter conditions. The term hibernation is commonly applied to all types of winter dormancy vertebrate animals e. g many fishes, amphibians, bears and few other mammals.

Apex answer is tolerance