Question

The jacklabbit is a desert mammal. The jackrabbit's circulatory system increases blood flow to the ears during hot days. The blood flow to the ears decreases during cool or cold nights. This circulation pattern is most directly related to -

Answer 1

I don't know what the specific term you are looking for is, but this is an example of regulated temperature. The blood flow in the day lets the body be cooled down as the blood cools in the thin of the ears, then returns to the body. In the night blood flow is reduced because the animal only wants to stay warm, not lose heat.

Answer 2

The correct answer is homeostasis.

Step-by-step explanation:

A mechanism of the body to sustain a steady internal environment in spite of the modifications occurring in the external surrounding is known as the homeostasis. Maintaining the temperature of the body, controlling blood pH, and the concentration of glucose in the body are some of the ways followed by the body to sustain homeostasis. One of the prime examples of homeostasis is the internal body temperature of an organism.