相关Ifthepopulationofthe的文学知识

问题详情：IfthepopulationoftheEarthkeepson__61._(increase)atitspresentrate，therewill__62._(event)notbeenoughresourceslefttosupportlifeontheplanet.Bythemiddleofthe21stcentury，ifpresenttrendscontinue，we__63_...