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.
Sponsored Topics. Bedford is a suburban city located in northeast Tarrant County, Texas in the mid-cities area between Dallas and Fort Worth. It is a suburb of Fort Worth. The population was 48,390 as of a 2005 census estimate. Bedford is part of the Hurst-Euless-Bedford Independent School District.