Answer:
Food is scarce year-round
Step-by-step explanation:
Ectotherm, called cold-blooded animals, whose regulation of body temperature depends on external sources, such as sunlight or any other environmental source.
Example of Ectotherm are: fishes, amphibians, reptiles, and invertebrates.
Endotherm -called warm-blooded animals; those maintain a constant body temperature independent of the environment.
Example of endotherms ; include the birds and mammals and some fish are also endothermic.
Costs and Benefits of Endothermy
By Increasing the rate of metabolism is especially energy intensive. As a result, endothermic animals typically need more food than ectothermic animals.