Which mineral is a key element of hemoglobin in blood?
a. potassium
b. magnesium
c. iron
d. phosphorus
e. zinc
Question 2
With respect to health care in the United States, one gender difference is that ____.
a. men see doctors more often than women
b. men control three-fourths of health-care expenditures
c. women are hospitalized more often than men
d. women take fewer prescription drugs than men
e. men are hospitalized more often than women