underpopulation
Từ liên quan
overpopulationdemographypopulationcensusbirth ratefertilitymortalitydepopulationdeclineshrinkagevacancysparsityscarcityshortagedeficitworkforcemigrationemigrationimmigrationexodusaginggerontologysenescenceextinctioncollapsedesertionghost townurbanizationdensityhabitatecologycarrying capacitysustainabilityeconomyproductivitytax basepensionsocial securityhealthcareinfrastructuresettlementcolonizationfrontierwastelandvoidpopulatedepopulatedemographiccontraceptionsterilityinfertilityfamineplagueepidemicpandemicwarfaregenocideattritionattritesparsethinemptybarrendesolate