b.cellular membranes is the answer
Answer:cellular respiration
Explanation:
<span>Blood flow to the skin increases when the
temperature of the body rises. When you are too hot, the blood vessels in your
skin expand (dilate) to carry the excess heat to your skin's surface. It helps
cool your body. </span>
Answer:
The change from the oblong skull and protruding face of ancient humans (right) to the modern rounder skull and retracted face is associated with a sharper bend in the floor of the brain case (lower left), thought to be caused by increased brain size.
Explanation:
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