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POLLUTION: Any waste that imposes an opportunity cost when it's returned to the natural environment. Pollution is one of the more prevalent examples of an externality cost and market failure. Examples include, but by no means are limited to, car exhaust, municipal sewage, industrial waste, and agricultural chemical runoff from farms. Pollution waste can be classified as degradable, persistent, or nondegradable, depending on how easily it can be broken down into nonharmful form by the natural environment. Pollution problems can never be eliminated, but they can be handled with efficiency if the amount of pollution is such that the cost of damages is the same as the cost of cleanup.
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AGGREGATE DEMAND SHIFTS Changes in the aggregate demand determinants cause the aggregate demand curve to shift. The mechanism is comparable to that for market demand determinants and market demand. There are two alternatives--an increase in aggregate demand and a decrease in aggregate demand. An increase in spending by any of the four sectors--household, business, government, and foreign--shifts the aggregate demand curve to right. A decrease in spending by these four sectors shifts the aggregate demand curve to left.
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PURPLE SMARPHIN
[What's This?]
Today, you are likely to spend a great deal of time touring the new suburban shopping complex wanting to buy either a Boston Red Sox baseball cap or a square lamp shade with frills along the bottom. 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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Lewis Carroll, the author of Alice in Wonderland, was the pseudonym of Charles Dodgson, an accomplished mathematician and economist.
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"Defeat is not the worst of failures. Not to have tried is the true failure." -- George E. Woodberry, Author
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MPP
Marginal Physical Product
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