ECSENOMICS Gross Domestic Product Can Be measured Either as(a)a Flow of Final Products or Equivalently, as(b)a Flow of Costs T153 Figure 21-1 Circular Flow of Macroeconomic Activity Consumption purchases a Final goods and servces (bread, computers, haircuts, etc. Producers households. (businesses) ernment,,.) (b) Productive services (labor, land, e:c, Wages, rents, profit, etc. McGraw-Hilllrwin Source: U.S. Department of Commerce. Shaded regions are major economic downturnsMcGraw-Hill/Irwin Copyright © 2001 The McGraw-Hill Companies, Inc. All rights reserved. Gross Domestic Product Can Be Measured Either as (a) a Flow of Final Products or, Equivalently, as (b) a Flow of Costs T-153 Figure 21-1 Source: U.S. Department of Commerce. Shaded regions are major economic downturns