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.
Located in southern Texas, San Antonio is the gateway to the American Southwest, and the cradle of Texas liberty. This beautiful city of over one million still retains a small-town feel, even though it's home to five Texas universities and many high-tech corporations. The Alamo. 2  The Mission San Antonio de Valero, better known as the Alamo, is where Mexico 's General Santa Anna's army defeated David Crockett, Jim Bowie and 188 others on March the 6th 1863. 3  It is the most famous historical spot in Texas.