Erosion is the breakdown of anything. Like for example rock erosion is when the water keeps hitting the rock over and over until then the rock sarts to breakdown.
For more population and it is also bad if the world is overpopulated.
The protein components which reside on the red blood cell membrane and which determines blood type are THE ANTIGENS.
Antigens are proteins molecules which are found on the surface of the red blood cell, the antigens that are present in the cell determine the type of blood that will be present in the individual. There are four types of blood; A, B, AB and O. <span />
