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a plastic card with encoded information that allows the holder to make purchases and to pay the credit card company at a later date.
the number of years a person born in a certain country can be expected to live.
energy sources obtained from deposits of ancient organic remains (coal; natural gas; and...
low- and middle income countries in which most people have a lower standard of living than...
in trade when a country can produce a good at a lower cost (using fewer resources) than any...