Blood Type Facts: There are eight different common blood types, which are determined by the presence or absence of certain antigens, which are substances that can trigger an immune response if they are foreign to the human body.
Arizonaâs monsoon is the northern extent of the North American Monsoon, which begins in early June in central and southern Mexico.The monsoon is a season, during which the dry westerly winds that persist through fall, winter and spring shift to moist southerly winds, bringing thunderstorm activity into Arizona.
June 13, 2012. Get ready: Arizona's monsoon season is here â well, almost. ASU climatologist Randall Cerveny says that although monsoon season begins June 15, after the National Weather Service recently defined this date as the monsoon's new seasonal start, forecasting the actual start of the Arizona monsoon remains cloudy.