会计学1TheAdvantagesandDisadvantagesofGeneticallyModifiedFood第一页，共15页。The Advantages and Disadvantages of Genetically Modified FoodOrangejuicemadefrom100%carrots.第1页/共14页第二页，共15页。The Advantages and Disadvantages of Genetically Modified FoodGeneticallymodifiedbakedbeans.willtheylookandtastethesametome?第2页/共14页第三页，共15页。n nDefinitionn nGrowthofGMcropsn nProsandconsn nConclusionThe Advantages and Disadvantages of第3页/共14页第四页，共15页。DefinitionGeneticallymodified(GM)foodsarefoodsproducedfromgeneticallymodifiedorganisms(GMO)thathavehadtheirDNAalteredthroughgeneticengineering.GMfoodswerefirstputonthemarketintheearly1990s.Themostcommonmodifiedfoodsarederivedfromplants:soybean,cornandcottonseedoil.第4页/共14页第五页，共15页。Growth of GM crops Thefirstcommerciallygrowngeneticallymodifiedwholefoodcropwasatomato(calledFlavrSavr),whichwasmodifiedtoripenwithoutsoftening.第5页/共14页第六页，共15页。Growth of GM cropsBy2006,intheUnitedStates89%ofsoybeans,83%ofcotton,and61%ofmaize(corn)weregeneticallymodified.Between1997and2009,thetotalsurfaceareaoflandcultivatedwithGMOshadincreased,from4.2millionacresto331millionacres.第6页/共14页第七页，共15页。Growth of GM cropsAlthoughmostGMcropsaregrowninNorthAmerica,inrecentyearstherehasbeenrapidgrowthintheareasownindevelopingcountries.第7页/共14页第八页，共15页。Growth of GM cropsIn2009thelargestincreaseincropareaplantedtoGMcrops(soybeans)wasinBrazilBy200987%ofIndiancottonwasGM第8页/共14页第九页，共15页。Pros and cons第9页/共14页第十页，共15页。AdvantagesnMoreproductiveandhavealargeryieldnOffermorenutritionalvalueandbetterflavornEliminateallergy-causingpropertiesinsomefoodsnInbuiltresistancetopests,weedsanddiseasenMorecapableofthrivinginregionswithpoorsoiloradverseclimatesnMoreenvironmentfriendlynMoreresistantandstayripeforlongernFeedgrowingworldpopulationsnSafenThemeddlingwithnatureargumentmadeagainstGMfoodsdoesntholdwater第10页/共14页第十一页，共15页。DisadvantagesThegrimreaper第11页/共14页第十二页，共15页。Disadvantages n nChangeafewgenes,changeChangeafewgenes,changethewholepicturethewholepicturen nNoevaluatetherisksNoevaluatetherisks n nManyGMcompaniesdontManyGMcompaniesdontlabeltheirfoodsasbeingGMlabeltheirfoodsasbeingGMfoodsfoods n nEndfooddiversityEndfooddiversity n nNewer,strongerNewer,strongerchemicalschemicals n nEcologicalproblemsEcologicalproblems n nTheclaimofendingworldTheclaimofendingworldhungerwithGMfoodisahungerwithGMfoodisafalseclaimfalseclaim n nHarvestedgraingermsareHarvestedgraingermsareincapableofdevelopingincapableofdeveloping n nImproveorganicagriculturalImproveorganicagriculturalpracticespractices 第12页/共14页第十三页，共15页。Conclusionn nthepotentialtosolvemanyproblemsthepotentialtosolvemanyproblemsn nmanychallengesmanychallengesn nproceedwithcautionproceedwithcaution第13页/共14页第十四页，共15页。内容(nirng)总结会计学。More environment friendly。Newer, stronger chemicals。many challenges。proceed with caution。第13页/共14页第十五页，共15页。