जीवमंडल में फास्फोरस का मु – McqOptions

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1.	जीवमंडल में फास्फोरस का मुख्य भंडार कहां है?
A.	स्थलमंडल
B.	वातावरण
C.	हीड्रास्फीयर
D.	क्षोभ मंडल
Answer» B. वातावरण

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