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Population Distribution and Composition
Theories of Population Change
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abortion Africa age group agricultural Asia average birth and death capita census century China cities contraception crude birth rate crude death rate demographic change demographic transition demographic transition model density developing countries differentials diseases distribution elderly estimates Europe example factors family planning family planning programs females fertility decline fertility rate Figure geographic growth rates immigration impact income India industrial infant mortality International Migration land large numbers Latin America levels Limits to Growth live major males marriage million modern mortality rates number of children occurred patterns percent period pollution popu Population Bulletin population density population geography population growth population policy population projections population pyramid Population Reference Bureau problems rapid recent regions registration relatively residence result Revolution rural sex ratio social Source Statistics Table theory tion trends ulation United Nations urban areas variables Washington whereas women world population York