GHSA urges all states to adopt a universal motorcycle helmet law and vigorously enforce existing laws. 1  47 states, the District of Columbia, Guam, the Northern Mariana Islands, Puerto Rico and the U.S. Virgin Islands have a helmet law for motorcyclists. 19 states, the District of Columbia, the Northern Mariana Islands, Puerto Rico and the U.S. Virgin Islands have a universal helmet law, requiring helmets for all riders. 2  The remaining 28 states and Guam require helmets for specific riders.
Hides and Skins. the skins of domestic and wild animals, as well as fur seals, fish, and reptiles, that are used as the raw materials in making leather.
Skin is the soft outer covering of vertebrates. Other animal coverings such as the arthropod exoskeleton have different developmental origin, structure and chemical composition.eptiles and fish have hard protective scales on their skin for protection, and birds have hard feathers, all made of tough Î²- keratins. Amphibian skin is not a strong barrier, especially regarding the passage of chemicals via skin and is often subject to osmosis and diffusive forces.