About leafy sea dragons respiration and circulation

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

Aflame cell is at the end of each tubule of the nephridium malpighian tubules kidneys none of the above

Vessels draining the myocardium of the heart, open primarily ,into which chamber?