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APHG Unit 2.1-2.4

Words from learning objective 2.1-2.4

TermDefinition
population distribution a description of how individuals are distributed with respect to one another
population density a measurement of the number of people per given unit of land
arithmetic densiy the total number of people divided by the total land area
arable land land suited for agriculture
physiological density the number of people per unit of area of arable land
agricultural density the ratio of the number of farmers to the total amount of land suitable for agriculture
carrying capacity largest number of individuals of a population that an environment can support
sex ratio the number of males per 100 females in the population
age cohort people born at roughly the same time who pass through the course of life together
population pyramid a model used in population geography to show the age and sex distribution of a particular area
Baby Boom a cohort of individuals born in the USA between 1946 and 1964 which was a time of relative peace and prosperity following WW2
mortality the state of being subject to death
fertility the production of offspring within a population
doubling time the number of years needed to double a population assuming a constant rate of natural increase
natural increase the growth rate of a population; the difference between birthrate and death rate
demography the scientific study of population characteristics
demographics statistical data relating to the population and particular groups within it
 



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