Why is the concentration of ozone less over the north and south poles? – McqOptions

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1.	Why is the concentration of ozone less over the north and south poles?
A.	CFCs accumulate only in area where the air is cold
B.	CFC use is highest in these areas
C.	CFCs stick to frozen water vapour and are able to act catalysts
D.	UV rays are stronger in the atmosphere
Answer» D. UV rays are stronger in the atmosphere

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