Driven by the heart, your blood cells travel around your body carrying oxygen to your body cells. when you exercise, your body requires more oxygen. what happens to your heart when you exercise?

By the late 1700s the best place to find a water frame and a spinning mule was in

This law states that the "chinese laborers to this country endanger the good order of certain localities" in the united states. which of these would represent a "locality" that would most likely have wanted this law created and passed? a) dallas b) chicago c) atlanta d) san francisco

The soldiers in the novel use the phrase "it all looked good on paper" several times throughout their experiences. what does this mean in the context of the war?