(If there are no antigens at all on the surface of the red blood cells, all three possible antibodies are present in the blood plasma: A, B and Rh antibodies.). The blood type notation O Rh-indicates which antigens and antibodies are present in the blood.
There were 2,473 billionaires in the world, as of Wealth-Xâs last count through 2015. That was a 6.4 percent increase in billionaires from the year before. But who these billionaires are and what theyâre like is more difficult to discern.
Thanks to family inheritances, family businesses and technology startups, there seem to be more young billionaires today than at any point in history. The youngest billionaire in the world comes in at just over 24 years old, with the 10th youngest being 31 years old. 1. Evan Spiegel