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.
The University of Arizona Health Sciences Center has a Pollen Calendar for Tucson and the surrounding desert so you can track what pollen is affecting your sinuses through the year.Tucson Urban Pollen Calendar. Tucson Desert Pollen Calendar. Copyright 2015 Tucson News Now.hile the mild Arizona weather means plants can grow year-round, many of the blooms peak production in spring. In spring, day-to-day there is generally not a major change in the amount of pollen in the air. Over the season the types of pollen change as plants go in and out of their bloom cycles.