In linguistics and grammar, a pronoun (abbreviated PRO) is a word that substitutes for a noun or noun phrase. It is a particular case of a pro-form.
Some of the most significant toxic effects associated with substances used or emitted in plastic production include: 13. 1  Benzene (PET, PVC, LDPE, PP): known human carcinogen, workplace exposure depresses the nervous system. 2  Chromium oxide (HDPE, LDPE): suspected carcinogen, damaging to the liver and nervous system.ome of the most significant toxic effects associated with substances used or emitted in plastic production include: 13. 1  Benzene (PET, PVC, LDPE, PP): known human carcinogen, workplace exposure depresses the nervous system. 2  Chromium oxide (HDPE, LDPE): suspected carcinogen, damaging to the liver and nervous system.
Viral message claims car interiors contain toxic levels of cancer-causing benzene emitted by dashboards, car seats, and air fresheners, and recommends opening windows to expel trapped benzene gas before turning on the car air conditioner.True or false?s to car air fresheners, there's precious little information available about the ingredients, though one European study found that some household air fresheners emit measurable amounts of benzene. It's not inconceivable that some car air fresheners do, too. The crucial question is how much.