关于Todaythereare6billio的百科

•    Todaythereare6billionpeopleontheearth.Bytheyear2050t...

• 问题详情：   Todaythereare6billionpeopleontheearth.Bytheyear2050theremaybe12.5billion.Thisisalotofpeopletofeed.Weneedmorefood.   Onewaytoproducemorefoodisbygrowingstrongerplants.Forthousandsofyears,farmershavemadeplantsbetter.Everyseason,theypick...
• 2019-11-276617