If you are studying a specific area of the body and the organs contained within it, what are you studying?

The amount of oxygen that is actually used by the body during the rest or a hand workout is determined by the heart rate, the stroke volume, and the amount of a. blood circulating in the vascular system b. oxygen removed from the vascular system c. oxygen provided to the vascular system d. blood that individual has in the body e. hemoglobin in the red blood cells

Which is the lipid molecule that controls what types of molecules can pass though?

Can easily sweep pedestrians and vehicles downstream. 1 high winds 2 rain 3 floodwaters