THE CHEMISTRY OF SUNSCREEN. Sunscreen: (snskrn) n. Chemical or physical agents that protect the skin from sunburn and erythema by absorbing or blocking ultraviolet radiation. A preparation, often in the form of a cream or lotion, used to protect the skin from the ultraviolet rays of the sun.
The Llano County Courthouse in Llano. Llano County /ËlÃ¦noÊ/ is a county located on the Edwards Plateau in the U.S. state of Texas. As of the 2010 census, its population was 19,301. Its county seat is Llano, and the county is named for the Llano River. In 1869, pioneer rancher John Wesley Snyder led a cattle drive from Llano County along the Chisholm Trail to Abilene, Kansas.
The Llano Uplift Region of Texas. This area is also known as the Central Mineral Region of Texas. The Llano Uplift region is a fragile ecosystem. As stewards of the land, Texans should do all they can to protect the terrain of the Llano Uplift region from pollution, erosion, and destruction.Surface pollution seeps into our precious aquifers, and thus affects our drinking water. Although it is hard, granite is brittle, and thus fractures and cracks easily.s stewards of the land, Texans should do all they can to protect the terrain of the Llano Uplift region from pollution, erosion, and destruction. Surface pollution seeps into our precious aquifers, and thus affects our drinking water.