Which of the following gases causes depletion in the ozone layer?
- A$He$
- B$NO$
- C$CO_2$
- D$H_2$
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List-$I$ List-$II$ $A$. Nitrogen oxides in air $I$. Eutrophication $B$. Methane in air $II$. $pH$ of rain water becomes $5.6$ $C$. Carbon dioxide $III$. Global warming $D$. Phosphate fertilisers in water $IV$. Acid rain
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| List-$I$ | List-$II$ |
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| $A$. Nitrogen oxides in air | $I$. Eutrophication |
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| $D$. Phosphate fertilisers in water | $IV$. Acid rain |
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