Manyoftheworld’scountrieshavereachedorareapproachingzer...
问题详情：Manyoftheworld’scountrieshavereachedorareapproachingzeropopulationgrowth(ZPG).Nearlyallsuchlandsareeconomicallywelldeveloped．TheyincludemuchofEurope(includingRussia),theUnitedStates,Canada,Jap...