61.  The economist who authored The General Theory (1936), arguing that governments in the future would have to practice fiscal and monetary policies was

Society’s understanding of the best ways to produce goods and services

The number unemployed as a percentage of the labor force

A sharp reduction in an economy’s total output accompanied by high unemployment lasting more than a year; a severe economic contraction

36. Market transactions that go unreported, either because they are illegal or because people involved want to evade taxes

This early American argued that nations must temporarily close themselves to outside trade in order to develop their own industries, also known as the “infant-industry argument”

Unemployment that fluctuates with the business cycle, increasing during contractions and decreasing during expansions

Nutritive sucking is usually at a rate of

 A folic acid deficiency induces a form of anemia called

Lean muscle mass is used as an energy source during