Prohibition in the United States was a nationwide constitutional ban on the sale, production, importation, and transportation of alcoholic beverages that remained in place from 1920 to 1933.rohibition was mandated under the Eighteenth Amendment to the United States Constitution. Enabling legislation, known as the Volstead Act, set down the rules for enforcing the ban and defined the types of alcoholic beverages that were prohibited. For example, religious uses of wine were allowed.
Relaying sound waves is the function of a  frog's tympanum.    Specifically, the term describes a structure which is located on  the outside of some amphibians, insects and mammals. In frogs, it  is found just behind the frog's eye.
The scala tympani is a channel in the cochlea, the part of the ear where sounds are converted into electrical signals and sent to the brain. It is essential for hearing. Sound waves are converted to mechanical vibrations in the middle ear, and then into waves within the fluid-filled cavity of the scala tympani. Hair cells suspended in fluid then detect these waves, and relay the sound information through the cochlear nerve to the brain.