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MATERIALS BALANCE: A hard and fast rule that the total amount of stuff removed from the natural environment will be eventually returned, probably as pollution. This is based on a fundamental law of physics that says material can be neither created nor destroyed, but only transformed. During any given period (such as a year) the quantity of materials returned to the environment is the difference between the quantity extracted and the quantity used by the economy.
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BARRIERS TO ENTRY Institutional, government, technological, or economic restrictions on the entry of participants into a market or industry. The four primary barriers to entry are: (1) resource ownership, (2) patents and copyrights, (3) government restrictions, and (2) start-up cost. Barriers to entry are a key reason for market control and the inefficiency that results. In particular, monopoly, oligopoly, monopsony, and oligopsony often owe their market control to assorted barriers to entry. By way of contrast, perfect competition, monopolistic competition, and monopsonistic competition have few if any barriers to entry and thus little or no market control.
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GRAY SKITTERY
[What's This?]
Today, you are likely to spend a great deal of time flipping through mail order catalogs wanting to buy either a looseleaf notebook binder or hand lotion, a big bottle of hand lotion. Be on the lookout for pencil sharpeners with an attitude.
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This isn't me! What am I?
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Junk bonds are so called because they have a better than 50% chance of default, carrying a Standard & Poor's rating of CC or lower.
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"You just don't luck into things as much as you'd like to think you do. You build step by step, whether it's friendships or opportunities. " -- Barbara Bush, first lady
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CES
Constant Elasticity of Substitution
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