The eon represents the past 544 million years of geologic time.

What did the first language sound like

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

What is a group of organisms that are closely related and share similar characteristics