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AGGLOMERATION: The clustering of several similar or related activities at the same location. Many industries have firms that tend to agglomerate, that is, locate very close to one another, leading to geographic concentration. For example, the motion picture industry is concentrated in California, the fashion industry is concentrated in New York, and the petroleum industry is concentrated in Texas. Agglomeration can be caused by accessibility to a concentrated natural resource (such as petroleum or sunny weather), but if often feeds upon itself through agglomeration economies. Firms in the same industry often have lower production cost when the located near their competitors.
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MARGINAL COST The change in total cost (or total variable cost) resulting from a change in the quantity of output produced by a firm in the short run. Marginal cost (MC) indicates how much total cost changes for a given change in the quantity of output. Because changes in total cost are matched by changes in total variable cost in the short run (total fixed cost is fixed), marginal cost is the change in either total cost or total variable cost. It is found by dividing the change in total cost (or total variable cost) by the change in output. Marginal cost is one of four cost concepts used in short-run production analysis. The other three are average total cost, average fixed cost, and average variable cost.
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WHITE GULLIBON
[What's This?]
Today, you are likely to spend a great deal of time flipping through mail order catalogs seeking to buy either a remote controlled train set or a genuine down-filled snow parka. Be on the lookout for celebrities who speak directly to you through your television.
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This isn't me! What am I?
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Three-forths of the gold mined each year is used to manufacture jewelry.
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"Few things can help an individual more than to place responsibility on him, and to let him know that you trust him. " -- Booker T. Washington, educator
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WE
Walrasian Equilibrium
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