The total number of people divided by the total land area. It enables geographers to compare the number of people living on given piece of land in different regions of the world.
The number of people supported by a unit area of arable land. It helps geographers understand the capacity of the land to yield enough food for the needs of the people.
The ratio of the number of farmers to the amount of arable land. Geographers use this to understand relationships between population and resources in a country.
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