Vasodilation , when your body is to hot. <span>Blood capillaries dilate and increase their diameter. More blood flows near the body surface. Excess heat in the body is lost through the conduction and radiation to the environment. Your arm hair also rises. </span>
<span>swimming by large fish</span>
<span>Earthquakes happen in the Earth’s crust. It's when the plates on the crust move. </span>
