In what year did it become unlawful to knowingly vent CFCs and HCFCs?
A) 1987
B) 1992
C) 1994
D) 1996

Question

Quizplus · Accepted Answer

In 1992, the United States and other countries signed the Montreal Protocol, which included a phase-out of ozone-depleting substances, including chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs). As part of this agreement, it became unlawful to knowingly vent these substances into the atmosphere.

In What Year Did It Become Unlawful to Knowingly Vent