It important to know a person's rhesus factor before a blood transfusion? a patient who is rh+ can receive only rh– blood. a patient who is rh– can receive only rh+ blood. a patient who is rh+ can receive only rh+ blood. a patient who is rh– can receive only rh– blood.

the answer is 100% density i've answered this question before and done the quiz myself.

the wetland preservation movement began in the u.s. in earnest with the clean water act (cwa) of 1972. although not specifically written to protect wetlands, the cwa is comprised of a series of regulations designed to prevent pollutants from contaminating u.s. waters.