Answer:
Polystyrene is a versatile plastic used to make a wide variety of consumer products.
Explanation:
polystyrene, a hard, stiff, brilliantly transparent synthetic resin produced by the polymerization of styrene. Styrene is obtained by reacting ethylene with benzene in the presence of aluminum chloride to yield ethylbenzene.
in other words its a plastic
9/11 happened on the 11th of September
