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(also called the Model of Demographic Transition) a model developed to explain population growth rates over time
the ratio between the prices of exports and the prices of imports in a country
(also called relief rain) rain that occurs when air rises up the windward side of a mountain and...
the day on which the overhead sun shines on the most southerly or northerly line of latitude
the weathering and erosion of a slope so that it moves backwards with little change in the...