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प्रश्न
Earth's atmosphere contains about ______ percentage of nitrogen and oxygen.
विकल्प
78% and 21%
22% and 1%
21% and 0.97%
10% and 20%
MCQ
रिक्त स्थान भरें
उत्तर
Earth's atmosphere contains about 78% and 21% percentage of nitrogen and oxygen.
shaalaa.com
Introduction of Weather and Climate
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