Everytimeyougotothesupermarketyoucomeawaywithyourpurchasespackedinplasticbags.Butwouldn’titbekindertotheenvironmentifyouaskedforpaperbagsinstead?
Theanswerisnotaseasyasitmightseem.Environmentalistssaytherearedrawbackstousingbothplasticbagsandpaperbags.
80percentofgroceriesintheUSarepackedinplasticbagsandthenumbersarebecominghuge.Consumersusebetween500billionand1trillionplasticbagsperyearworldwide.
Someexpertsbelievethatallthesebagsharmtheenvironment.Plastictakeshundredsofyearstobreakdownandasitdoessopoisonousmaterialsarereleasedintothewaterandsoil.
Furtherdamageiscausedifplasticbagsenterthesea.Forexampleendangeredseaturtlescannottellthebagsfromjellyfishtheirmainsourceoffoodandoftenchokeonthem.
Howeverthiskindofbagdoeshaveitsadvantages.
Paperbagsusemoreenergyandcreatemorewastethanplasticbags.Plasticbagsrequire40percentlessenergytoproduceandcause70percentlessairpollution.Theyalsoreleaseasmuchas94percentlesswasteintothewaterthanpaperonesdo.
Butpaperbagsdobreakdownmorequicklythanplasticbags.Theydon’tendangerwildlifeeither.
Sowhatshouldwedo?Onepossiblesolutionwouldbetousebiodegradableplasticbags.“Biodegradable”meansthatthebagsbreakdownnaturallyjustlikeapieceofbananapeelwhenitisleftoutside.
Butuntilbiodegradabletechnologyimprovesitmightbeeasiertopackthingsyoubuyinreusableclothbags.
【小题1】Comparedtopaperbagsplasticbags______.
A.biodegradableplasticbagscancompetewithpaper
B.paperbagsseemtobekindtoenvironment
C.it’sdifficulttosaywhetherplasticorpaperbagsarebetterfortheenvironment
【小题3】Whatdoestheauthorsuggestpeopleuseatthepresenttime?