Science · General Science
पृथ्वी का वायुमंडल मुख्यतः किससे बना है?
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- 2नाइट्रोजन और ऑक्सीजन✓
- 3केवल नाइट्रोजन
- 4केवल ऑक्सीजन
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नाइट्रोजन और ऑक्सीजन
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