जो परत पृथ्वी पर वापस रेडि� – McqOptions

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1.	जो परत पृथ्वी पर वापस रेडियो तरंगों को भेजता है?
A.	योण क्षेत्र
B.	बहिर्मंडल
C.	स्ट्रैटोस्फियर
D.	क्षोभ मंडल
Answer» B. बहिर्मंडल

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