What chemical poses the most danger to the ozone layer?
A) chlorofluorocarbons (CFCs)
B) dihydrogen oxide
C) dioxin
D) polychlorinated biphenyl
E) triple-bonded oxygen (O3)

Question

Quizplus · Accepted Answer

CFCs are the main substances responsible for the depletion of the ozone layer. They release chlorine and bromine atoms that react with ozone, breaking it down into oxygen molecules. Dihydrogen oxide (water), triple-bonded oxygen (O3) in the stratosphere, dioxin, and polychlorinated biphenyls (PCBs) do not pose a significant threat to the ozone layer.

What Chemical Poses the Most Danger to the Ozone Layer