1. Which of the industries listed below are weight-losing? (5 pts) (a) whiskey distillation (b) soft beverage bottling ((2) iron mining (d) potato chips 2. Which factors did not contribute to the existence and growth of cities? (5 pts) (a) the decline of agricultural productivity (b) specialization of labor (c) industrial revolution (d) sea trade 3. What is not a form of agglomeration externality? (5 pts) (a) knowledge spillover among firms in the same industry (b) knowledge spillover among upstream and downstream rms (c) sharing labor pool (d) high rents because of high density of economic activity