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The 14C activity of some ancient Peruvian corn was found to be 10 disintegrations per minute per gram of carbon. If present-day plant life shows 15 dpm/g, how old is the Peruvian corn? The half-life of 14C is 5730 yr.
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The economic system of the United States characterized by private enterprise, a variety of industries, and is the largest national economy in nominal terms.
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Financial discounts or benefits offered by governments to encourage certain behaviors or investments, reducing the tax liability for businesses or individuals.
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A method of buying goods through a series of payments over time, where the buyer gains possession of the item immediately but pays for it in periodic installments.
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