Are all cells able to survive on their own?

According to the cladogram, which organisms have roundworms as a common ancestor?

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

Which organism actively hunts other