Environment & Ecology · Environment
प्रदूषण का मुख्य कारण क्या है?
- 1जनसंख्या वृद्धि
- 2औद्योगिकरण
- 3शहरीकरण
- 4उपरोक्त सभी✓
सही उत्तर देखें
उपरोक्त सभी
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