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Population terms

Demographic Transition The process of change in a society's population froma condition of high crude birth and death rates and low rate of natural increase to a condition of low crude birth abd death rates, low rate of natural increase, and a higher total population
Infant Mortality rate (IMR) The total amount of deaths each year among infants inder 1 year old for every 1,000 live births in a society
I=PAT Impact= Population*Affluence*Technology
Physiological Density The number of people per square unit of arable land (land suitable for architecture)
Crude Birth Rate (CBR) The total number of live births in a year for every 1,000 people alive in the society
Migration Form of relocation diffusion involving a permanent move to a new location.
Urbanization An increase in the percentage and in the number of people living inurban settlements
Zero Population Growth (ZPG) A decline of the total fertility rate to the point where the natural increase rate equals zero
Demography Scientific study of population characteristics
Crude Death Rate (CDR) The total number of deaths in a year for every 1,000 people alive in a society
Chain Migration Migration of people to a specific loctaion because relatives or members of the same nationality previously migrated there.
Literacy Rate The percentage of a country's poeple who can read and write
Arithmetic density The total number of people divided by total land area
Natural Increase Rate (NIR) The percentage growth of a population in a year, computed as crude burth arte minus crude death rate
Total Fertility Rate (TFR) The average number of children a woman will have throughout her child bearing years
Push and Pull Factors Factor that induces people to leave a location, or to move to a new location
Fertility Measurement of actual number of offspring produced through sexual reproduction; usually descibed in number of offspring of females, since paternity can be hard to determine
Fecundity Physical ability to reproduce
Population momentum A potential for increased population growth as young members reach reproductive age
Mortality Death Rate in a population; the probablilty of dying
Carrying Capacity The maximum number of individuals of any species that can be supported by a partitcular ecosystem on a long term basis
Logistic Growth Growth rates regulated by internal and extrenal factors taht establish an equilibriun with environmental resources (S curve)
Life expectancy The average age that a newborn infant can expect to attain in a particular time or place
Life-span The longest period of time reached by a type of organism
Megacity Urban area with more than 10 million in habitants
Biotic Potential The maximun reproductive rate or an organism, given unlimited resources and ideal conditions. Compare with environmental resistance
Exponential Growth Growth at a constant rate of increase per unit of time; can be expressed as a constant fraction or exponent (Geometric)
Environmental Resistance All limiting factors that tend to reduce population growth rates abd set the maximum allowable population size or carrying capacityof an ecosystem
Natality Production of new indiviuals by birth, hatching, germination or cloning
Family Planning Controlling reproduction; planning the timing of birth and having as many babies as are wanted and can be supported
Created by: wine069