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Balbeer M.
's Polls
GK
Ozone hole refers to
hole in ozone layer
2 votes (100%)
hole in ozone layer
decrease in the ozone layer in troposphere
0 votes (0%)
decrease in the ozone layer in troposphere
decrease in thickness of ozone layer in stratosphere
0 votes (0%)
decrease in thickness of ozone layer in stratosphere
increase in the thickness of ozone layer in troposphere
0 votes (0%)
increase in the thickness of ozone layer in troposphere
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2 votes
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Wolmal
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