农大农学专业英语debate

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1、TheAdvantages&DisadvantagesofGeneticallyModifiedFood:BothSidesoftheDebatewrittenby:SonalPanse*editedby:PaulArnold^updated:4⑻2013Thenumberofcountriesgrowinggeneticallymodifiedcropshasincreasedinrecentyearscausingmuchdebateoverthesafetyoftheseproducts.Supportersclaimitwillfeedtheworldandpromo

2、tebetterhealthandecologicalwelfare・Whileothersbelievethefoodcontainsriskstohumanhealth.Geneticallymodifiedorganisms(GMO)includecrops,vegetablesandfruitthathavebeencreatedusinggeneticengineeringmethods・Scientistscombinedesirablegenesfromvariousspeciestocreatenewgenetically-alteredcrosseswith

3、enhancednutritional,productiveandecologicalvalue・Thisdiffersfromtraditionalbreedinginthatgenetictransferencebetweenunrelatedspeciesdoesnotoccurbiologicallyinnature・Theprocessofcombininginter-speciesgenes,whichiscalledrecombinantDNAtechnology,doesnothavethechecksandbalancesthatareimposedbyna

4、tureintraditionalbreeding.Becauseofthisthereisariskofgeneticinstability.Thismeansthatnoonecanmakeanyaccuratepredictionsaboutthelong-termeffectsofGMOsonhumanbeingsandtheenvironmen匚Extensivetestinginthisregardiseitherveryexpensiveorimpractical,andthereisstillagreatdealabouttheprocessthatscien

5、tistsdonotunderstand.ThisisthecruxofthematterintheongoingdebateofGMOs.Foodisanemotionaltopic.Itmattersagreatdealtoallofus.Wearewhatweeatafterall.Thesubjectisalsoofvestedinterestforthecorporationsthatmanufacturegeneticallymodifiedseedsandagriculturaltechnologies・Theargumentsareintenseandpass

6、ionate.ProponentsClaimThatThereareManyAdvantages:•Cropsaremoreproductiveandhavealargeryield.•Couldpotentiallyoffermorenutritionandflavor(althoughthisisdebated).•Apossibilitythattheycouldeliminateallergy-causingpropertiesinsomefoods.•Inbuiltresistancetopests,weedsanddisease.•Morecapableofthr

7、ivinginregionswithpoorsoiloradverseclimates.•Moreenvironmentfriendlyastheyrequirelessherbicidesandpesticides.•Foodsaremoreresistantandstayripeforlongersotheycanbeshippedlongdistancesorkeptonshopshelvesforlongerperiods.•AsmoreGMOcropscanbegrownonrelativel