Industrial air pollutants, such as organochlorines and heavy metals, are carried to the arctic on air currents from populated areas. Lichens are a dominant life form on the tundra, and they are particularly vulnerable to air pollution because they lack roots and get the majority of their resources from the air. Because of this, lichens have historically been used as air pollution indicators.
Hurst is a city in Tarrant County, Texas, United States. Hurst is one of the Mid-Cities between Fort Worth and Dallas. it is local a suburb of Fort Worth. The city was founded by William Letchworth Hurst. As of the 2010 census, it had a population of 37,337.
Hurst, Texas. Hurst is a city in the U.S. state of Texas located in the densely populated portion of northeastern Tarrant County and is part of the DallasâFort Worth metropolitan area. It is considered a Dallas and Fort Worth suburb and is part of the Mid-Cities region. It is 13 miles from the Dallas/Fort Worth International Airport.