- 问题详情:Manyoftheworld’scountrieshavereachedorareapproachingzeropopulationgrowth(ZPG).Nearlyallsuchlandsareeconomicallywelldeveloped.TheyincludemuchofEurope(includingRussia),theUnitedStates,Canada,Japan.andAustralia.Astherateofnaturalincrease(RNI)dec...
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