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PLASTIC
ON
ENVIRONMENT!!!第一页,共十五页。INTRODUCTIONPlasticisthegeneralcommontermforawiderangeofsyntheticorsemisyntheticorganicsolidmaterialssuitableforthemanufactureofindustrialproducts.Plasticsaretypicallypolymersofhighmolecularweight,andmaycontainothersubstancestoimproveperformanceand/orreducecosts.
Plasticisoneofthefewnewchemicalmaterialswhichposeenvironmentalproblem.Polyethylene,polyvinylchloride,polystyreneislargelyusedinthemanufactureofplastics.
第二页,共十五页。TYPESOF
PLASTICPRODUCTSPLASTICBAGSPLASTICCOATINGSPLASTICFURNITUREPLASTICSHEETSPLASTICFITTINGSPLASTICTANKSPLASTICTOYSPLASTICBUCKETSPLASTICSANITARYWAREPLASTICSTATIONERY第三页,共十五页。第四页,共十五页。
PLASTIC’SADVERSEEFFECTSONOUR
ENVIRONMENT
1}Plasticpollutebeaches&oceans
Garbagehasbeendiscardedintotheoceansforaslongashumanshavesailedthesevenseasorlivedonseashoresornearwaterwaysflowingintothesea.Sincethe1940s,plasticusehasincreaseddramatically,resultinginahugequantityofnearlyindestructible,lightweightmaterialfloatingintheoceansandeventuallydepositedonbeachesworldwide第五页,共十五页。2}PlasticbagslitterthelandscapeOncetheyareused,mostplasticbagsgointolandfill,orrubbishtips.Eachyearmoreandmoreplasticbagsareendinguplitteringtheenvironment.Oncetheybecomelitter,plasticbagsfindtheirwayintoourwaterways,parks,beaches,andstreets.And,iftheyareburned,theyinfusetheairwithtoxicfumes.
第六页,共十五页。3}PlasticbagskillanimalsAbout100,000animalssuchasdolphins,turtleswhales,penguinsarekilledeveryyearduetoplasticbags.Manyanimalsingestplasticbags,mistakingthemforfood,andthereforedie.Andworse,theingestedplasticbagremainsintactevenafterthedeathanddecompositionoftheanimal.Thus,itliesaroundinthelandscapewhereanothervictimmayingestit.
第七页,共十五页。4}Plasticbagsare
non-biodegradableAndoneoftheworstenvironmentaleffectsofplasticbagsisthattheyarenon-biodegradable.Thedecompositionofplasticbagstakesabout1000years.第八页,共十五页。PLASTIC’SEFFECTONHUMANLIFEPlasticplaysthevillainrightfromthestageofitsproduction.Themajorchemicalsthatgointothemakingofplasticarehighlytoxicandposeseriousthreattolivingbeingsofallspeciesonearth.
Someoftheconstituentsofplasticsuchasbenzeneareknowntocausecancer.Plasticresinsthemselvesareflammableandhavecontributedconsiderablytoseveralaccidentsworldwide.
第九页,共十五页。Onceplasticisproduced,theharmisdoneonceandforall.Plasticdefiesanykindofattemptatdisposal–beitthroughrecycling,burning,orlandfilling.Whenyourecycleahazard,youcreateahazard.
Recyclingofplasticisassociatedwithskinandrespiratoryproblems,resultingfromexposuretoandinhalationoftoxicfumes,especiallyhydrocarbonsandresiduesreleasedduringtheprocess.第十页,共十五页。MEASURES1.Single-useplasticbagshavebecomesuchaubiquitouswayoflifethatitseemsasifwesimplycannotdowithoutthem.However,ifwehavethewill,wecanstartreducingtheiruseinsmallways.2.Atotebagcanmakeagoodsubstituteforholdingtheshopping.Youcankeepthebagwiththecahier,andthenputyourpurchasesintoitinsteadoftheusualplasticbag.第十一页,共十五页。MEASURES3.Recyclingtheplasticbagsyoualreadyhaveisanothergoodidea.Thesecancomeintouseforvariouspurposes,likeholdingyourgarbage,insteadofpurchasingnewones.4.Whilegovernmentsmaybeworkingoutwaystolessentheimpactofplasticbagsontheenvironment,however,eachofusshouldshouldersomeoftheresponsibilityforthisproblem,whichultimatelyharmsus.第十二页,共十五页。GROUPMEMBERSNISHANTDOGRAROHITKHANNAKAVALDEEPSINGHMANRAJSANDHUMEGHAGAIKWA
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