![]() A substantial area of study, however, focuses on demographics of populations as they relate to density. ![]() Scientists have even studied how happiness correlates with population density. This list is not inclusive-the way society structures its living spaces affects many other fields of study as well. Infrastructure: how population density drives specific requirements for energy use and the transport of goods.Epidemiology: how densely populated areas differ with respect to incidence, prevalence, and transmission of infectious disease.Ecology: how increasing population density in certain areas impacts biodiversity and use of natural resources.Key areas of study include the following: Census or UN statistics to understand and better predict resource use and health trends. Departments of Energy and Agriculture all use population data from the U.S. Global Change Research Program, and the U.S. Energy Information Administration, the U.S. For example, the World Health Organization, the U.S. Population density data can be important for many related studies, including studies of ecosystems and improvements to human health and infrastructure. These terms do not have globally agreed upon definitions, but they are useful in general discussions about population density and geographic location. Dense population clusters generally coincide with geographical locations often referred to as city, or as an urban or metropolitan area sparsely populated areas are often referred to as rural. Therefore, the most useful data describes smaller, more discrete population centers. However, data on human population density at the country level, and even at regional levels, may not be very informative society tends to form clusters that can be surrounded by sparsely inhabited areas. Globally, statistics related to population density are tracked by the United Nations Statistics Division, and the United States Constitution requires population data to be collected every 10 years, an operation carried out by the U.S. In the case of humans, population density is often discussed in relation to urbanization, immigration, and population demographics. Population density can be used to describe the location, growth, and migration of many organisms. The number of individuals living within that specific location determines the population density, or the number of individuals divided by the size of the area. A population is a subgroup of individuals within the same species that are living and breeding within a geographic area.
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