A higher physiological density suggests that the available agricultural land is being used by more and may reach its output limit sooner than a country that has a lower physiological density.
Population density is a measurement of the number of people in an area. It is an average number. Population density is calculated by dividing the number of people by area. Population density is usually shown as the number of people per square kilometer.
The result shows that the United States has an arithmetic density of 30 persons per square kilometer (78 person per square mile). By comparison, the arithmetic density is much higher in South Asia. In Bangladesh, it is approximately 1,020 persons per square kilometer (2,640 person per square mile) and 325 (480) in India.
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