those energy sources that are not used up but are replenished in a cycle: wind; solar; water; waves; biofuels.
the quantity demanded or supplied will change depending on changes in the price.
banks and other financial institutions where foreign exchange is bought and sold.
those that reach peaks or lows a few months before the business cycle; such as number of new...
if the output is produced for one person there is no way of preventing others from using it as...