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AP HUG

        Help!  

Term
Definition
Agricultural Density   Number of farmers per unit of arable land  
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Arithmetic Density   Average number of people per unit of land (usually square kilometer)  
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Population distribution   The pattern in which humans are spread out on Earth's surface  
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Ecumene   The portion of Earth's surface with permanent human settlement  
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Population Clusters   Heavily populated areas, esp: South Asia, East Asia, Southeast Asia, Europe  
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Metacity   City with more than 20 million residents (ex: Delhi, Karachi)  
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Megacity   City with more than 10 million residents (ex: Mumbai, Kolkata, Lahore)  
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mean center of population   the balancing point given the distribution of population (take a country, average out where the population is, the middle point!)  
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Population Density   Average number of people per unit of land (population density is not specific– agricultural, arithmetic, and physiological are all types of population densities)  
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arable land   land suitable for cultivation  
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Carrying capacity   The number of people a particular environment or place can support in a sustainable way.  
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Population Composition   Makeup of the population by age, sex, ethnic, racial, income, and educational background  
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age structure   breakdown of a population into different groups  
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Dependency ratio   "Number of dependents (under 15 & over 64) in a population that each 100 working–age people must support. (divide number of dependents by working age population)"  
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Youth dependency ratio   Number under 15 that every 100 working age person must support  
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Elderly dependency ratio   Number of elderly dependents in a population (older than 64) that every 100 working age person must support  
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High child dependency   "Youth dependency Higher than 45 percent, lower than 15 percent elderly dependency Pakistan is here!"  
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Moderate child dependency   "29–45 percent youth dependency, lower than 15% elderly dependency Brazil is here!"  
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Double Dependency   "Moderate youth dependency (29–45%); high elderly (15% or higher). USA is here!"  
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High elderly dependency   "Youth dependency under 29%, elderly is 15% or higher. Japan is here!"  
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Low overall dependency   "Youth: lower than 29%; Elderly: lower than 15% United Arab Emirates is here!"  
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GI   lived through WWII  
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Silent Generation   Born during the great depression/WWII  
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Baby Boomers   born after WWII  
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Gen X   born between 1965– 1980  
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Gen Y   (Millennials): 1981–2000 (Pastel!)  
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Gen Z   (iGen? Centennials?): you!"  
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Sex ratio   Ratio of men to women  
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Androcentrism   culture has a preference for men  
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Demographic equation   Calculating total population of a place based on natural increase & migration over 1 year)  
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Crude Birth Rate (CBR)   average number of births per 1000 people  
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Low birth rate   CBR of 10–20 births per 1000  
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Transitional birth rate   CBR of 20–30 births per 1000  
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High birth rate   CBR of more than 30 births per 1000  
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TFR (total fertility rate)   Average number of children born per woman during her reproductive lifetime  
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Replacement level fertility   TFR of 2.1  
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Crude death rate (CDR)   number of deaths per year per 1000  
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Infant mortality rate (IMR)   how many infants die within the first year of life per 1000 live births  
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Rate of natural increase (RNI)   difference between number of births and deaths in a given year, as percentage of total population (NOT 1000)  
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Child mortality   deaths of children under 5  
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zero population growth   same number of births and deaths in a given year (RNI is 0)  
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Rule of 70   calculates doubling time by dividing 70 by RNI  
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Doubling time   number of years it takes for a population to double in size  
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DTM (demographic transition model)   Crude birth rates & crude death rates, Rate of Natural increases, all presented as stages countries progress through due to industrialization & urbanization  
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Epidemiology   Branch of medicine that studies the diseases  
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DTM Stage 1: High stationary   High birth & death rates  
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DTM Stage 2: Early expanding   Death rates drop, birth rates remain high  
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DTM Stage 3: Late expanding   Birth rates decline, RNI declines  
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DTM stage 4: Low stationary   Birth rates & death rates are low  
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DTM stage 5: Natural decrease stage   Birth rates drop below replacement level  
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Malthusian theory   population will outgrow resources  
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cornucopians   population growth stimulates innovation, we will not hit a population breaking point  
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Boserup effect   increase in food production from better farming practices  
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Pronatalist policies   policies designed to increase population  
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antinatalist policies   Policies designed to decrease population  
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median age   the age that divides a population into two halves  
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