List of volcanoes in Japan. This is a list of active and extinct volcanoes in Japan. Orange background indicates a volcano considered active by the Japan Meteorological Agency.
Facts about Blood Types with charts about Blood Types and Blood type information O + O positive donors are needed more frequently than any other donor. Because O positive is the most common Blood type (39% of the population), it is needed more often by people requiring Blood in hospitals. Facts about Blood Types with charts about Blood Types and Blood type information. O - 7% of the population has O negative Blood.
O-negative blood group is the  universal donor  blood group. This means that a person with any blood group can receive O-negative blood. This is very important in emergency situations when a person requires immediate blood transfusion and there is no time to test his/her blood group.