What is the term for the moving of a population out of an area?
Emigration. If it's a forced emigration, it's called expatriation. The dispersion of people from their native land is also known as a diaspora (with a lower-case D). The people who have been dispersed can also be referred to as a diaspora. If it's because of a natural disaster it also can be called "evacuation" (to a safer place.) * When a population moves from one area to another, such as people moving from the city to the suburbs it is referred to as migration, the same is applicable to persons who follow seasonal work such as migrant agriculture laborers. And of course it is applied to the animal and bird species that follow seasonal migration.
A population is the term used for all members of a particular species that live in one area. However, the term population can only refer to ONE species in ONE specific area, but there can be many different populations in one area. Any living thing can make a population, so for example, you could have a population of bacteria in the leaf litter of a forest. Examples: The population of elk increased dramatically in Yellowstone…
Which term refers to the spread of people living in a given area or how the population is arranged according to things like age race or gender?
Which term describes a sudden and widespread outbreak of a disease within a population group or area?
Immigration increases the population, because new individuals are entering the area. Emigration decreases the population, because individuals are moving out of the area. Natality Rate increases the population, because new organisms are born. Mortality Rate decreases the population, because the organisms are dying.
The term "rural" refers to an area of low population density, typically with most of the land used for agriculture. The term "urban" refers to an area of high population density, with most of the land mass given over to cities, with their manufactured structures (buildings, roadways, factories). People tend to use "rural" to mean an area in the country, while "urban" is used to mean an area devoted to a large city.
Population, in statistics, is the entirety of units for which some variable information is collected for statistical purposes. "Population" need not have anything to do with people. For example, in a forestry study the population might be all trees in a given area, and the measured variable could be the species and/or ages of a selection (sample) of the population.