Learning Objectives

4.2.1 Describe how the body temperature of an organism influences its functioning.

4.2.2 Use information about the gains and losses of energy to determine whether an organism's temperature is rising or dropping.

4.2.3 Identify the heat exchange mechanisms used by plants and animals to regulate their body temperatures.

4.2.4 Contrast ectothermy and endothermy, and explain how each influences the geographic distributions of organisms, along with organisms' sensitivities to changes in body temperature.