Population: Facts, Discussion Forum, and Encyclopedia Article

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Population

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	Topics Population Topic Home In sociologySociology Sociology is the study of society and human social action.... and biologyBiology Biology is the branch of science dealing with the study of life.... a population is the collection of inter-breeding organisms of a particular speciesSpecies In biology, a species is one of the basic units of biodiversity.... . A population shares a particular characteristic of interest most often that of living in a given geographicGeography Overview Geography is the study of the Earth's features and of the distribution of life on the earth, including human life and the e... areaArea Area is a physical quantity expressing the size of a part of a surface.... . In taxonomyTaxonomy Taxonomy was once only the science of classifying living organisms , but later the word was applied in a wider sense, and m... population is a low-level taxonomic rankTaxonomic rank Summary Taxonomic rank is an abstract term used in the scientific classification, or taxonomy, of organisms.... . Human populations can be defined by many characteristics such as mortalityDeath Death is the full cessation of vital functions in the biological life.... , migrationHuman migration Summary Human Migration denotes any movement by humans from one locality to another, often over long distances or in large groups.... , familyFamily A family consists of a domestic group of people , typically affiliated by birth or marriage, or by comparable legal relation... , public healthPublic health Public health is concerned with threats to the overall health of a community based on population health analysis.... , workFacts About Employment Employment is a contract between two parties, one being the employer and the other being the employee.... and the labor forceLabor force In economics the labor force is the group of people who have a potential for being employed.... , and family planningFamily planning See alsoReproductive healthFamily planning in Iran... . Various aspects of human behavior in populations are also studied in sociologySociology Sociology is the study of society and human social action.... , economicsEconomics In the social sciences, economics is the study of the production, distribution, and consumption of goods and services..... , and geographyGeography Geography is the study of the Earth's features and of the distribution of life on the earth, including human life and the e... . Study of populations is almost always governed by the laws of probabilityProbability Informally, probable is one of several words applied to uncertain events or knowledge,... , and the conclusions of the studies may thus not always be applicable to some individuals. This odd factor may be reduced by statistical means, but such a generalization may be too vague to imply anything. Demography is used extensively in marketingMarketing Marketing is a social and managerial function associated with the process of researching, developing, promoting, selling, an... , which relates to economic units, such as retailers, to potential customers. For example, a coffeeCoffee Coffee is a popular beverage prepared from the roasted seeds of the coffee plant.... shop that wants to sell to a younger audience looks at the demographics of an area to be able to appeal to this younger audience. According to papers published by the United States Census BureauUnited States Census Bureau The United States Census Bureau is a part of the United States Department of Commerce.... , the world population hit 6.5 billion (6,500,000,000) on January 25 2006. The United Nations Population FundUnited Nations Population Fund The United Nations Fund for Population Activities was started in 1969 and renamed the United Nations Population Fund ... designated October 12 1999 as the approximate day on which world population reached 6 billion. This was about 12 years after world population reached 5 billion, in 1987. However, the population of some countries, such as NigeriaNigeria Overview Nigeria, officially the Federal Republic of Nigeria, is a country in West Africa and the most populous country on the ... , is not even known to the nearest million,, so there is a considerable margin of error in such estimates. In 2008 the United Nations Population Division projected that the world's population will likely surpass 9 billion in 2050. The last 50 years have seen a rapid increase in population due to medical advancesHistory of medicine All human societies have medical beliefs that provide explanations for, and responses to, birth, death, and disease.... and substantial increase in agricultural productivity, particularly in the period 1960 to 1995 made by the Green RevolutionGreen Revolution The term Green Revolution is used to describe the transformation of agriculture in many developing nations that led to signi... . See also 1907 populations Biological dispersalBiological dispersal Biological dispersal refers to those processes by which a species maintains or expands the distribution of a population.... Biological exponential growthBiological exponential growth When the resources availability is unlimited in the habitat, the population of an organism living in the habitat grows in an expon... DemographyDemography Summary Demography is the scientific study of human population dynamics.... List of countries by fertility rateList of countries and territories by fertility rate This is a list of countries by total fertility rate: the expected number of children born per woman in her child-bear years, base... List of countries by populationList of countries by population This is a list of sovereign states and other territories by population,... List of countries by population densityList of countries by population density Overview List of countries and dependencies by population density in inhabitants/km.... List of religious populationsList of religious populations Of the 6,450,000,000 people on Earth as of June 2005, as published by the United States Census Bureau, 5,208,000,000 followed worl... Nurgaliev's lawNurgaliev's law In population dynamics, Nurgaliev's equation says... OverpopulationOverpopulation Overpopulation is the condition of any organism's numbers exceeding the carrying capacity of its ecological niche.... Population densityPopulation density Population density is a measurement of population per unit area or unit volume.... Population ecologyPopulation ecology Population ecology is a major subfield of ecology—one that deals with the dynamics of species populations and how thes... World largest cities External links a platform for interaction between research centres and international organizations, such as the United Nations Population Division, UNFPA, WHOWho Who may mean:* Who, an English language interrogative pronoun.... and FAO. . Retrieved February 13 2005. (2005). Retrieved February 13 2005. . Retrieved February 13 2004. . Retrieved March 4 2005. PopulationData.net (2005). United NationsUnited Nations name = United NationsNations Unies... (2004). , Department of Economic and Social Affairs. Retrieved February 13 2004. United States Census BureauUnited States Census Bureau The United States Census Bureau is a part of the United States Department of Commerce.... (2005). . Retrieved February 13 2005. . (French)