The opposite of an acid is a base, and that's exactly what an antacid is. Antacids make you feel better by increasing the pH balance in your stomach. The pH system is a scale for measuring the acidity or alkalinity of a given environment (in this case, your stomach). The scale goes from 0 to 14. A pH of 7 is neutral. Below 7 is acid. Above 7 is alkaline.
Economy is the large set of inter-related economic production and consumption activities which aid in determining how scarce resources are allocated.
Of course, the total economy is much more compli-. cated than the illustration above. An economy involves. interactions between not only individuals and businesses, but also Federal, state, and local governments and resi-. dents of the rest of the world. Also not shown in this sim-.