Key Concepts. Photochemical smog is a type of air pollution produced when sunlight acts upon motor vehicle exhaust gases to form harmful substances such as ozone (O. Photochemical smog formation requires the following conditions: 1  a still, sunny day. 2  temperature inversion (pollutants accumulate in the lower inversion layer).
Chebanse, Illinois. Chebanse is a village in Iroquois and Kankakee counties in the U.S. state of Illinois. The population was 1,148 at the 2000 census, and 1,088 in 2009. The Kankakee County portion of Chebanse is included in the Kankakee-Bradley, Illinois Metropolitan Statistical Area. Contents.
Homefacts City Report. Chicago Heights is located in Cook County, IL. The population is 30,348. There are 20 public schools in Chicago Heights with an average Homefacts rating of D+. The total crime rate for Chicago Heights is moderate, and there are 46 registered sex offenders residing in the city.