Let s look first at how ozone is made. View Animation. Oxygen gas (two molecules of oxygen, or O 2) is present in the atmosphere. High energy UV light collides with the oxygen molecule, causing it to split into two oxygen atoms. These atoms are unstable, and they prefer being bound to something else.
Terrell, Texas. Not to be confused with Terrell County, Texas. Terrell is a city in Kaufman County, Texas, United States. As of the 2010 census, the city population was 15,816. Terrell is located 32 miles (51 km) east of Dallas.
Frio County is a county located in the U.S. state of Texas. As of the 2010 census, its population was 17,217. The county seat is Pearsall. The county was created in 1858 and later organized in 1871. Frio is named for the Frio River, whose name is Spanish for cold.