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POLLUTION TYPES: Pollution residuals fall into one of three categories--degradable, nondegradeable, and persistent. Damage done by each type, and thus external cost, typically varies. At one extreme are degradable residuals and at the other are nondegradable. In the middle are persistent residuals.
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SILVER CERTIFICATES Paper currency issued and authorized by the U.S. Department of the Treasury that is, in principle, backed up by, and exchangeable for, an equivalent value of silver. Silver certificates were in circulation as a medium of exchange for the U.S. economy during two periods, 1878 to 1923 and 1928 to 1957. A similar form of paper currency is gold certificates.
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GRAY SKITTERY
[What's This?]
Today, you are likely to spend a great deal of time going from convenience store to convenience store wanting to buy either a birthday greeting card for your father or a T-shirt commemorating the first day of spring. 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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Natural gas has no odor. The smell is added artificially so that leaks can be detected.
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"All things are difficult before they are easy." -- Thomas Fuller, Physician
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WAPM
Weak Axiom of Profit Maximization
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