Blood Alcohol Content is the legal name for BAC but Blood Alcohol Concentration is sometimes used for simpler description. Blood alcohol content is usually expressed as a percentage of ethanol in the blood in units of mass of alcohol per volume of blood or mass of alcohol per mass of blood, depending on the country.
One way that society controls science is that the government can make certain experiments illegal. Hmm, maybe, but the apex answer is: People pass laws to restrict some research.
A system in which society, usually in the form of the government , owns and controls the means of production Capitalism An economic system based on private property and free enterprise Communism A political and economic system where factors of production are collectively owned and directed by the state.