Which of the following is the main culprit in the thinning of the ozon – McqOptions

MCQOPTIONS

1.	Which of the following is the main culprit in the thinning of the ozone layer in the Earth's atmosphere?
A.	chlorofluorocarbons
B.	Nitrogen oxide
C.	Carbon dioxide
D.	methane
Answer» B. Nitrogen oxide

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