During a race, the body temperature of a runner increases. the runner responds by perspiring, which lowers his body temperature. this process is an example of?

Homeostasis

Explanation: The body has a system to regulate all the processes and factors in a balanced state. This includes maintaining blood pH, body temperature, blood pressure, rate of heart beat, contraction and relaxation of muscles, etc.

All this is maintained by homeostasis. To bring one factor in balanced state, many different organs will come into action. For example, to bring the body temperature back to normal, circulatory system and respiratory system comes into play.

answer: "circumcision is a common procedure in which the skin covering the tip of the penis is surgically removed."

answer; the tunica intima also called tunica interna, consists of elastic fibers,connective tissue and smooth muscle cells;