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.
social control is of value to society as a whole, since it is essential to the maintenance of social order; others point to the sectional interests that are served in the process of social control, emphasizing the lack of normative consensus, the differences in power that are involved and the close linkage between power and control.