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INCREASING-COST INDUSTRY: A perfectly competitive industry with a positively-sloped long-run industry supply curve that results because expansion of the industry causes higher production cost and resource prices. For an increasing-cost industry the entry of new firms, prompted by an increase in demand, causes the long-run average supply curve of each firm to shift upward, which increases the minimum efficient scale of production.

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INCREASING MARGINAL RETURNS

In the short-run production by a firm, an increase in the variable input results in an increase in the marginal product of the variable input. Increasing marginal returns typically surface when the first few quantities of a variable input are added to a fixed input. This is one of two alternatives for marginal returns. The other is decreasing marginal returns. A related phenomenon for long-run production is increasing returns to scale.

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Today, you are likely to spend a great deal of time at a garage sale hoping to buy either car battery jumper cables or a dozen high trajectory optic orange golf balls. Be on the lookout for the happiest person in the room.
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A scripophilist is one who collects rare stock and bond certificates, usually from extinct companies.
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