Each country in the world computes their own percentages of blood types. I will answer the American percentage of blood types: O+ is 37%, O- is 6%, A+ is 34%, A- is 6%, B+ is 10%, B- is 2%, AB+ is 4% and AB- is 1%.
Type O blood occurs in 46% percent of the population, while Type A and B occur in 40 and 10 percent of the population, respectively. Type AB is the rarest, occurring in only 4% of the population.
The Percentage of Australian's is 10 Percent FOOL!
Larger humans always have more blood than smaller humans. They need a larger volume to feed and oxygenate their many more cells.
Blood type AB is the most common among humans of all races. A and B blood types are about even for second place and Blood type O comes in third for least common.
O blood
o
capillaries
ab
The largest plurality American Jews are Blood Type A.
Blood makes up 7% of the weight of the body in humans. See: http://en.wikipedia.org/wiki/Blood
Neutrophils (a type of white blood cell), percentage of them by volume among your complete blood Count.
Leukemia
common iliac arteries
Yes, they can its very common in a lot of places.