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.
The District of Columbia elects two shadow senators, but they are officials of the D.C. city government and not members of the U.S. Senate. The United States has had 50 states since 1959, thus the Senate has had 100 senators since 1959.