Science · Environment - Air Pollution
बड़े नगरों में वाहनों और उद्योगों के कारण वायु प्रदूषण का मुख्य स्रोत क्या है?
- 1तापीय विद्युत् संयंत्र
- 2निलंबित कणमय पदार्थ
- 3मलजल
- 4जीवाश्मी ईंधन का दहन✓
सही उत्तर देखें
जीवाश्मी ईंधन का दहन
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