A person's blood type is based on the antigens found in the blood. These antigens, A and B are found on the surface of the blood cells and are uses as markers in the body. Type O blood does not have A or B antigens on the red blood cells, but contains both types in the plasma.
The Karst Plateau or the Karst region (Italian: Carso; Slovene: Kras), also simply known as the Karst, is a limestone plateau region extending across the border of southwestern Slovenia and northeastern Italy.he Karst Plateau or the Karst region (Italian: Carso; Slovene: Kras), also simply known as the Karst, is a limestone plateau region extending across the border of southwestern Slovenia and northeastern Italy.
ENVIRONMENT WHERE APPLICABLE: Karst is most common in carbonate terrains in humid regions of all kinds (temperate, tropical, alpine, polar), but processes of deep-seated underground dissolution can also occur in arid regions.arst regions are also important scenic attractions and can contribute significantly to the local economy, for example the Tower Karst around Guilin and Mammoth Cave National Park, Kentucky. The karst system is sensitive to many environmental factors and can form a significant geohazard.