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MARGINAL RETURNS: The change in the quantity of total product resulting from a unit change in a variable input, holding all other inputs fixed. You might recognize this as the definition of marginal product. It is. Marginal returns is an older and more generic term for marginal product. While marginal product has largely replaced marginal returns in most discussions of short-run production, the phrase does persist in a few terms like the law of diminishing marginal returns. When you come upon the phrase marginal returns, more often than not, it's probably referring to marginal product.
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MARKET STRUCTURE CONTINUUM The four common market structures, perfect competition, monopoly, monopolistic competition, and oligopoly, can be viewed as a continuum based on (1) differences in the number of firms in a market, (2) the relative size of each firm, and thus (3) the market control of each firm. Perfect competition lies at one end and monopoly at the other. Monopolistic competition is close to perfect competition and oligopoly is near monopoly. The essence of the continuum is that monopolistic competition blends into oligopoly, with no clear-cut line of separation.
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YELLOW CHIPPEROON
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Today, you are likely to spend a great deal of time looking for a downtown retail store looking to buy either a genuine fake plastic Tiffany lamp or a microwave over that won't burn your popcorn. Be on the lookout for letters from the Internal Revenue Service.
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Approximately three-fourths of the U.S. paper currency in circular contains traces of cocaine.
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"Every generation of Americans needs to know that freedom exists not in doing what we like, but in having the right to do what we ought. " -- Pope John Paul II
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