Biology

Biology, 19.07.2019 18:30, jeffhuffle17

Which statement best explains how the cardiovascular system the body maintain a steady temperature in cold weather? a. the heart muscle contracts, pumping more blood to the extremities. b. the blood vessels in the skin constrict, reducing the rate of blood flow. c. the heart rate rises, increasing the amount of carbon dioxide in the body. d. the blood pressure drops, causing the heart and breathing rates to increase.

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