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प्रश्न
Ozone hole was first discovered over ______.
विकल्प
Arctic
Antarctica
America
Indian ocean
MCQ
रिक्त स्थान भरें
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उत्तर
Ozone hole was first discovered over Antarctica.
Explanation:
The ozone hole was first discovered over Antarctica. Its appearance over the Arctic was confirmed later.
shaalaa.com
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