Question

what is Blood ?how many type of blood​

Answer 1

potatoes tomato and cheese

Answer 2

There are four main blood types (A, B, O and AB), which are determined by the presence or absence of certain antigens on the surface of red blood cells. Individuals are also typed as either Rh positive or Rh negative depending on the presence or absence of the most important red cell antigen in the Rh blood group.

Blood Types | A, B, O & AB Blood Donors Carter BloodCare