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.
As you can see from the map, the population of Arizona is concentrated around Phoenix, the state capital, and Tucson, its second largest city. The largest county in Arizona, by population, is Maricopa County, which is home to 3.8 million of the stateâs 6.5 million people and nine of its ten largest cities.