Answer 3124

ओजोन परत के क्षरण में क्लोरोफ्लोरो कार्बन का मुख्य स्रोत क्या है? 

 

[A] वृक्ष

[B] रेफ्रिजरेटर

[C] दूषित जल

[D] केरोसिन

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