Unlike reptiles young mammals depend on their parents for
a. food.
b. protection.
c. grooming.
d. all of the above

How did the discovery of the rhesus factor affect society? o more patients died from having a transfusion with the wrong rhesus factor 0 new treatments during pregnancy could prevent harm to the developing child. o less donated blood could be used in the treatment of patients. the number of blood types was reduced by half