Which earth layer us inferred to be composed of solid nickel and iron

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 molecules does hemoglobin decay into over time

Fredrick griffith made a scientific discovery in 1928