Didyoueverwonderwhat的精选

问题详情：  Didyoueverwonderwhatplantseat?Mostly,theytakethingsthathumandon’twant,likecarbondioxide(二氧化碳)canturnthemintothingsthatwewant,likeoxygen(氧气). 36  Weburnplantsforfuel.Weevenuseplan...