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GP 1 - Global Population Basics and Regions Demographics is...

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Global Population Basics and Regions
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Demographics is the study of human population distribution and migration. Key Issues of Demographics are: Food Supply Health and life expectancy Status of women Migration
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People are NOT distributed evenly across the Earth.
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Fig. 2-2: World population is very unevenly distributed across the Earth’s surface and it can be compared to climate distribution.
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Global Population Densities and Distributions
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Density: the measure of the number of people per square mile/kilometer, etc. Arithmetic density : total number of people divided by the total land area. It is the most common statistic given.
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Arithmetic Density
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Density: the measure of the number of people per square mile/kilometer, etc. Arithmetic density : total number of people divided by the total land area. It is the most common statistic given. Physiologic density : is the number of people per unit of arable (farmable) land.
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Physiologic Density
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Distribution : ¾ of the world’s population lives on only 5% of the land. Very uneven distribution was intensified in the 20 th century as population soared.
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