पृथ्वी की पपड़ी में ऑक्सीज – McqOptions

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1.	पृथ्वी की पपड़ी में ऑक्सीजन का प्रतिशत क्या है?
A.	47.70 %
B.	57.70 %
C.	27.70 %
D.	37.70 %
Answer» D. 37.70 %

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