How do some chemicals increase the risk of a person getting cancer ? A. By causing cell mutations

B. By causing a decrease in the immune response

C. By causing an increase of toxins in the skin

D. By causing a deficiency of Vitamin D

Which of these would most likely be a stimulus that would cause the body to initiate feedback mechanisms a.) normal body temperature in an arctic environment b.) normal boy temperature in a tropical environment c.)light physical activity d.)low blood sugar