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rain that can damage the environment because it contains acid from factory smoke and car exhaust
dependency ratio
replacement rate
major peace treaty at the end of WWI
life expectancy
nuclear radiation
total fertility rate
acid rain
demography
the number of old and young dependents who don't work compared with the working-age population
dependency ratio
replacement rate
major peace treaty at the end of WWI
life expectancy
nuclear radiation
total fertility rate
acid rain
demography
Treaty of Versailles
dependency ratio
replacement rate
major peace treaty at the end of WWI
life expectancy
nuclear radiation
total fertility rate
acid rain
demography
a form of energy that comes from nuclear reactions (no smell or taste, but very harmful)
dependency ratio
replacement rate
major peace treaty at the end of WWI
life expectancy
nuclear radiation
total fertility rate
acid rain
demography
the average age that a person in a given population can expect to live
dependency ratio
replacement rate
major peace treaty at the end of WWI
life expectancy
nuclear radiation
total fertility rate
acid rain
demography
the study of human populations, including how they change due to births, deaths, aging and migration
dependency ratio
replacement rate
major peace treaty at the end of WWI
life expectancy
nuclear radiation
total fertility rate
acid rain
demography
the average number of children a woman in a given population will have in her lifetime
dependency ratio
replacement rate
major peace treaty at the end of WWI
life expectancy
nuclear radiation
total fertility rate
acid rain
demography
the total fertility rate needed for a population to replace itself
dependency ratio
replacement rate
major peace treaty at the end of WWI
life expectancy
nuclear radiation
total fertility rate
acid rain
demography
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