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COMMODITY EXCHANGE: A financial market that trades the ownership of various commodities, such as wheat, corn, cotton, sugar, crude oil, natural gas, gold, silver, and aluminum. The two biggest commodity exchanges in good old U. S. of A. are the Chicago Board of Trade and the Chicago Mercantile Exchange. Unlike, let's say a grocery store where commodities physically trade hands, commodity exchanges trade only legal ownership. This is much like a stock market, which trades the ownership of a corporation, but leaves the factory at home. Commodity markets offer two basic sorts of trading -- spot (immediate delivery of a commodity) and futures (delivery of a commodity at a future date).

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AVERAGE REVENUE PRODUCT

Total revenue generated per unit of a variable input, keeping all other inputs unchanged. Average revenue product, usually abbreviated ARP, is found by dividing total revenue by the variable input or by multiplying average physical product by average revenue. Average revenue product is a part of marginal productivity theory used to analyze the demand for productive inputs.

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Today, you are likely to spend a great deal of time strolling through a department store seeking to buy either yellow cotton balls or a set of steel-belted radial snow tires. Be on the lookout for the last item on a shelf.
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More money is spent on gardening than on any other hobby.
"Life is a promise; fulfill it. "

-- Mother Teresa, humanitarian

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