Polyacrylonitrile is a polymer made from the monomer acrylonitrile, CH2CHCN. Polyacrylonitrile is used in making Acrilan™ fibers
used widely in rugs and upholstery fabric. If ignited,
this fiber can release a poisonous gas. In the case of
a fire, what danger might rugs and upholstery made
of this polymer present?

answer: any goods being imported from another country may be subject to issued by the federal government are tariffs

explanation:  

tariffs are a tax on anything that are imported from abroad. government use them to protect and boost their local industries and the thought is that they encourage consumers to buy local instead of importing and they will hope will protect jobs and economy in the country that implements them  

on passing the small ampere of electric current through the tube made of ar and hg of cfl generates uv rays which excites the fluorescent and thus emits the high radiation by consumption of just 5- 12 w in comparison to incandescent light which requires more power such as around 40 - 55 w to lighten.

moreover the life span of fluorescent or cfl is around 8000 h whereas the life span of incandescent is around 1200 h

hence, the building installed with incandescent lights bears more electricity bill.