Consciousness a. is a relatively simple phenomenon b. exists on a continuum c. is an all-or-nothing phenomenon d. includes only those states in which someone is fully alert

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

Avoiding excess salt and sodium may benefit a person’s health by

Some bacteria injure cells by giving off poisons called pathogens antibodies phagocytes toxins