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ARC ELASTICITY: The average elasticity for discrete changes in two variables, A and B. The distinguishing characteristic of arc elasticity is that percentage changes are calculated based on the average of the initial and ending values of each variable, rather than only initial values. Arc elasticity is generally calculated using the midpoint formula. Arc elasticity should be compared with point elasticity. For infinitesimally small changes in variables A and B, arc elasticity is the same as point elasticity.

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SCARCE RESOURCE

A resource with an available quantity less than its desired use. Scarce, or economic, resources are also called factors of production and are generally classified as either labor, capital, land, or entrepreneurship. Scarce resources are the workers, equipment, raw materials, and organizers used to produce scarce goods. Like the more general society-wide condition of scarcity, a given resource falls into the scarce category because it has a limited availability in combination with greater (potentially unlimited) productive uses.

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PINK FADFLY
[What's This?]

Today, you are likely to spend a great deal of time watching the shopping channel seeking to buy either a pair of designer sunglasses or looseleaf notebook paper. Be on the lookout for the last item on a shelf.
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Francis Bacon (1561-1626), a champion of the scientific method, died when he caught a severe cold while attempting to preserve a chicken by filling it with snow.
"In a restless, creative business with an emphasis on experiment and development, ideas are the lifeblood."

-- Richard Branson, Virgin Group founder

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