| http://www.w3.org/ns/prov#value | - Listening exercises focus on the law of diminishing returns and the various reasons why some jobs are better paid than others.Money and banksAuthor: Lilia Raitskaya and Stuart Cochrane Students examine different types of currency, examining the advantages and disadvantages of bartering for goods, ???commodity money??? such as gold or salt and ???fiat money???, such as coins and notes.
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