Teaching Bihar Sakshamta Pariksha (Niyojit Shikshak) Mock Test 2024 General Knowledge Ecology and Environment Environment Problems

निम्न प्रदूषकों में कौन जैव विघटित है ? 

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पारा
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वाहित मल
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प्लास्टिक
4
एसबेस्टस
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