the total number of people divided by the total land area
arithmetic density
a complete enumeration of a population
census
the scientific study of population characteristics
demography
the portion of earths surface occupied by permanent human settlement.
ecumene
the number of working age people divided by the number of persons 65 and older
elderly support ratio
the process of change in the distinctive causes of death in each stage of the demographic transition
epidemiologic transition
someone who has migrated to another country in the hope of being recognized as a refugee
asylum seeker
large scale emigration by talented people
brain drain
migration from a location
emigration
an area subject to flooding during a given number of years according to historical trends
floodplain
a form of relocation diffusion that involves a permanent move to a new location
migration
all types of movements between locations
mobility
the difference between the level of immagration and the level of emigration
net migration
a factor that induces people to move out of their present location
pull factor
a factor that induces people to move out of their present location
push factor