additivesbiodegradablebioplasticburnchemicalchemicalsclassificationconsequencescontrolcpcbdarkdegradationdifferentdiseaseenvironmentexplanationfactfactsfoodgeneratellmetalsmicromultiplenaturepackagingplasticpollutionplasticwastepollutionpolyethylenepopsproductspvcreasonrecyclingsaveshouldnsidesinglesizetoxictruthuseusingwastewater