प्रारंभिक वातावरण आज के वातावरण से मुख्य रूप से कैसे अलग था?
How was the early atmosphere mainly different from the present atmosphere?
Explanation opens after your attempt
B. उसमें मुक्त ऑक्सीजन बहुत कम थीIt had very little free oxygen
Concept
Low free oxygen was a major difference from today's atmosphere. Exam tip: keep oxygen as the main point in comparison.
Why this answer is correct
The correct answer is B. उसमें मुक्त ऑक्सीजन बहुत कम थी / It had very little free oxygen. Low free oxygen was a major difference from today's atmosphere. Exam tip: keep oxygen as the main point in comparison.
Exam Tip
प्रारंभिक वातावरण में मुक्त ऑक्सीजन की कमी आज के वातावरण से बड़ा अंतर थी। परीक्षा में तुलना में ऑक्सीजन को मुख्य बिंदु रखें।
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