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the additional costs to society of external factors such as the pollution of the air; ground and water during any production process.
(also called investment) the capital goods bought by government and businesses.
the value of the output produced by each additional worker.
(also called an index) a series of index numbers with a fixed time period; such as a year or a...
pollutants that accumulate over the years in water and on the land and cause serious problems....
the change in the firm's total revenue as a result of selling an extra unit of output