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| Q.22 | वह कौन सा एकमात्र पारिस्थितिकी तंत्र है, जो सौर ऊर्जा पर नहीं पनपता है? | |
| Ans | 1. समुद्री जीव (Marine organisms) | |
| 2. पादप प्लवक (Phytoplanktons) | ||
| 3. गहरे समुद्र में पाया जाने वाला जल-तापीय पारिस्थितिकी तंत्र (Deep sea hydro-thermal ecosystem) | ||
| 4. नाइट्रोजन स्थिरीकरण जीवाणु (Nitrogen fixing bacteria) |
Correct Ans Provided: 3
