1 If you have type A and type B antigens on the surface of your red blood cells, you do not have antibodies to A or B antigens in your plasma. 2  If you have neither type A nor type B antigens on the surface of your red blood cells, you have anti-A and anti-B antibodies in your plasma.
A big city in U.S itself will tend to have all modern amenities which tend to jack up the already high costs of day to day life along with the quality of living standards. According to a list compiled by the reputed Forbes magazine, presently there are about 413 billionaires who reside in U.S itself.
As of July 1, 2017, the United States has a total resident population of 325,350,377 making it the third most populous country in the world. It is very urbanized, with 81% residing in cities and suburbs as of 2014 (the worldwide urban rate is 54%).