The key elements of an amino acid are carbon, hydrogen, oxygen, and nitrogen, though other elements are found in the side-chains of certain amino acids. About 500 amino acids are known and can be classified in many ways.
Friendly is a town in Tyler County, West Virginia, in the United States.
Beckley, WV. Amidst the rolling emerald hills of West Virginia, the city of Beckley offers tourists a great destination for active, family fun. Beckleyâs motto is âGateway to Southern West Virginia,â in part because of its location an hourâs drive south of Charleston, the state capital.