Environment & Ecology · Ecology
पृथ्वी पर उपलब्ध कुल जल की मात्रा का लगभग कितना प्रतिशत भाग अलवण जल (स्वच्छ जल) है?
- 12.5 प्रतिशत✓
- 225.0 प्रतिशत
- 310.5 प्रतिशत
- 40.5 प्रतिशत
सही उत्तर देखें
2.5 प्रतिशत
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