Smog, or âground-level ozone,â as it is more wonkily called, occurs when emissions from combusting fossil fuels react with sunlight. Soot, or âparticulate matter,â is made up of tiny particles of chemicals, soil, smoke, dust, or allergens, in the form of gas or solids, that are carried in the air.
Arizona is a U.S. state with two senators in the United States Senate and nine representatives in the United States House of Representatives. Scroll down for a map of the districts.
Accredited Colleges & Universities in Arizona. Arizona is home to 50 four-year universities. The largest of these universities are the University of Arizona and Arizona State University. Both of these happen to be the state's most prestigious schools as well as the biggest schools in the state with online programs.