Scienceandtechnologyhavebeendevelopingrapidlyduringthepasttenyears.Theirdevelopmentshavebroughtlotsofbenefitstomankind.Sciencehaschangedsomuchoftoday’sworld.Duetoscience,wenowlivesafer,morecomfortableandconvenientlives.Howeversomepeoplearguethatwhileprogresshasbroughtusmanytime-savingmachines,ithasalsobroughtusenvironmentalpollutionandenergyshortagetotallyagreewithit,Sciencehasbeenresponsibleforpollution.Modernindustry,aswellasmoderntrafficconveniences,hascreatedaseriousproblemofairpollution.Thegreenearthisincreasingveryfast.isnowthreateningtheexistenceofmankind.thepopulationoftheearthisincreasingveryfast.humansmustmaketheearthsupporttheincreasingpopulation.Thishasmadeitnecessaryforagricultureandindustrytodeveloprapidly.Sucharapiddevelopmentproducesmoreandmorewaste,whichgoesintothewater,thesoilandtheair.Someofitismadeharmless.However,wherethereistoomuchofit,thepoisonouswastemaydogreatharmtothethingsaroundthepeople.FromwhatImentionedabove,Ibelievethatitisthedevelopmentofscienceandtechnologythatleadstothepollutionofenvironmentandshortageofenergy.