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.
Morris Ginsberg defines society as a collection of individuals united by certain relations or mode of behavior which mark them off from others who do not enter into these relations or who differ from them in behavior. Cole sees Society as the complex of organized associations and institutions with a community. According to Maclver and Page society is a system of usages and procedures of authority and mutual aid of many groupings and divisions, of controls of human behavior and liberties.