Production of PCBs was discontinued in 1977,yet PCBs are still found in the environment.The reason for this is
A)PCBs are formed naturally by plants and animals.
B)PCBs are very stable molecules.
C)PCBs are very reactive molecules.
D)PCBs are imported from other countries where their production is not banned.

Question

Quizplus · Accepted Answer

PCBs are very stable molecules and do not readily break down in the environment. Therefore, even though their production has been discontinued, PCBs can still be found in the environment. They can be released from old electrical equipment, landfills, and other sources.

Production of PCBs Was Discontinued in 1977,yet PCBs Are Still