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- 1overpopulationa function of the number of individuals compared to the relevant resources, such as the water and essential nutrients they need to survive. It can result from an increase in births, a decline in mortality rates, an increase in immigration, or an unsustainable biome and depletion of resources.
- 2Transmigarationto migrate to another country in order to settle there
- 3push-pull factorssomething that takes someone away from their native country and pulls them toward a new place.
- 4carrying capacitythe number of people, other living organisms, or crops that a region can support without environmental degradation.
- 5mortalitydeath, especially on a large scale.
- 6refugeea person who has been forced to leave their country in order to escape war, persecution, or natural disaster.
- 7internal migrationhuman migration within one geopolitical entity, usually a nation.
- 8sex ratiothe ratio of males to females in a population.
- 9distance decaythe effect of distance on cultural or spatial interactions.
- 10cohorta group of subjects who have shared a particular event together during a particular time span
- 11age distributionthe distribution of various age groups in a population
- 12standard of livingthe level of wealth, comfort, material goods and necessities available to a certain socioeconomic class in a certain geographic area.
- 13underpopulationhaving a population lower than is normal or desirable.
- 14rate of natural increasethe rate of natural increase is the crude birth rate minus the crude death rate of a population.
- 15Thomas MalthusBritish demographer that suggested that a massive plague or epidemic would check the population
- 16Natalitybirth rate, or CBR
- 17Population Pyramida pyramid-like diagram that displays the population distributions between age and sex
- 18Periodic Movementmovement involving longer periods of time further away from home
- 19zero population growthGrowth CDR and the CBR of a country even out
- 20Space-Time Prismset of all points that can be reached by an individual given a maximum possible speed from a starting point
- 21Transhumancea system of pastoral farming in which ranchers move livestock according to the seasonal availability of pastures
- 22Periodic Movementmovement involving longer periods of time further away from home
- 23Migration Patternspatterns of movement; Intercontinental- over countries' borders, Interregional- within a region or certain area
- 24intervening Opportunityan opportunity that arises or occurs before the reaching of the initial goal
- 25Gravity Modelinteraction of places based on their population, sizes, and distances between them
- 26Cyclic Movementrepetitive movement in a short periods of time
- 27Sustainabilityhow well a country can supply its residents with the proper needs
- 28Maladaptationan adaptation that does more harm than good
- 29Infant Mortality Ratehowever many infants die per thousand per year
- 30Demographic Equationequation that summarizes the amount of growth or decline in a population during a certain period of time, also taking into account net migration and natural increase
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