Pls help I’ll give brainlieast

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 shown to be an effective treatment for depression?

The "credit hour" is: the exact hour your tuition is due the basis for which semester hours are awarded an iou the amount of time you spend in class