demographic transition,”In traditional societies (Stage 1), both birth rates and death ratesare usually high and population numbers remain low and stable. With advances in foodproduction, education, and health care (Stage 2), death rates drop rapidly but birthrates drop slowly. When changed social and economic circumstances enable mostchildren to survive to adulthood without a need to produce a cadre of family labor,population growth rates slow and may eventually drift into negative growth. At this point,demographers say that the society has gone through this.During this, thedeath rate declines more rapidly thanthe birth rate, leading to large increasesin population numbers while family sizeslowly adjusts.Over time, populations may stabilize, butbecause of the lag in the lowering ofbirth rates
population numbers may besignificantly higher after the transition.”