Which of the following scenarios is representative of parasitism? A. Tapeworms living in mammal's intestinal tract B. Remora fish attaching themselves to sharks C. Birds feeding on insects stirred up by grazing animals D. Birds eating scraps of food from crocodile's teeth

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