Chapter 41, Problem 1DA

Data analysis What does this graph predict about the different challenges faced by smaller versus larger mammals in hot and cold environments?

Summary Introduction

To explain: That what does the graph given in the question predict about the different challenges faced by smaller versus larger mammals in hot and cold environments.

Introduction: Vertebrates comprise all species of animals within the subphylum Vertebrata. There are five classes of vertebrates, which are fish, amphibians, birds, reptiles, and mammals.

Explanation of Solution

In the given graph, it is predicted that small mammals, with a proportionately larger surface area, dissipate heat readily. It is helpful in a warm environment, but detrimental in cold environment. The small mammals in cold conditions must seek shelter or have adaptations, such as insulating hair to maintain body temperature. Due to a greater volume and proportionately less surface area, large mammals are better adapted to cold environments since it takes much longer for them to lose the heat of the body. The hot environments pose a greater challenge to them for the same reason.