Explain the production of dioxins. What kind of plastic are they, and why are they so harmful to humans?
 
When   is burned, are released, which are one of the most hazardous chemicals known to .
 
PVC (resin code #\(3\)), PS (resin code #\(6\), also known as Thermocol), and PC/ABS (resin code #\(7\)) are the three .