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If oceans formed but photosynthetic life did not evolve which atmospheric change would remain limited?यदि पृथ्वी पर महासागर बने लेकिन प्रकाश संश्लेषी जीवन न विकसित हुआ तो कौन सा वातावरणीय परिवर्तन सीमित रहता?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: Biological accumulation of free oxygenमुक्त ऑक्सीजन का जैविक संचय
Oceans were chemical media but photosynthesis was decisive for oxygen rise. Exam tip: separate roles of oceans and organisms.महासागर रासायनिक माध्यम थे पर ऑक्सीजन वृद्धि में प्रकाश संश्लेषण निर्णायक था। परीक्षा में महासागर और जीवों की भूमिकाएँ अलग रखें।
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