Inrecentyears,theEarthhasbeengettingwarmer.Averagetempe...
問題詳情:Inrecentyears,theEarthhasbeengettingwarmer.Averagetemperatureshaverisen.Possiblythisisnatural,butprobablywearecausingit.Modernpeopleusealotofelectricityanddrivealotofcars.Thisputscarbondioxide(二氧化...