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By which process did Earth's present atmosphere gradually become more life-friendly?पृथ्वी का वर्तमान वातावरण धीरे धीरे किस प्रक्रिया से अधिक जीवन अनुकूल बना?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: By gradual accumulation of oxygenऑक्सीजन के क्रमिक संचय से
Accumulation of oxygen improved conditions for life. Exam tip: understand atmospheric change as a slow process.ऑक्सीजन के संचय से जीवन के लिए दशाएँ बेहतर हुईं। परीक्षा में वातावरण परिवर्तन को धीमी प्रक्रिया समझें।
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