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the amount by which a value changes, expressed as a function of time.
the rate at which one currency is exchanged for another. The price of a currency expressed in...
the proportion of a region's population that lives below the poverty line.
the percentage increase per year in proportion to the total population that live in urban areas...
(Q) all numbers that can be expressed as an integer divided by an integer. These include all...
birds without a keel on their breastbones and therefore unable to fly, for example ostriches....
basic materials from the natural environment and used in the manufacturing process for making...