关于In1620abouthalftheUS的百科

•   In1620,abouthalftheUSAwascoveredbyforests.Todaythefor...

• 问题详情：  In1620,abouthalftheUSAwascoveredbyforests.Todaytheforestshavealmostgone.Alotofgoodlandhasgonewiththem,leavingonlysand.Chinadoesn'twanttocopytheUSA'sexample.We'replantingmoreandmoretrees.We'vebuiltthe"GreatGreenWall"oftreesacrossnort...
• 2019-06-309794