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Two fossils are found in a hillside.Fossil A was found in an upper layer and fossil B was found in a lower layer.Which of the following statements is true?
Labor
The human effort, including physical and mental skills, employed in the production of goods and services within an economy.
Demand
The desire accompanied by the ability to pay for goods or services, determining the quantity that will be bought at a given price level.
Marginal Revenue Product
The additional revenue generated from the sale of one more unit of a good or service produced as the result of one more unit of an input.
Wage Rate
The fixed amount of compensation or payment received by an employee from an employer in exchange for work or services performed.
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