Environment & Ecology · Environmental Pollution
निम्नलिखित में से किसे जैव-निम्नीकरणीय (Biodegradable/Degradable) प्रदूषक के रूप में वर्गीकृत किया गया है?
- 1घरेलू सीवेज (Domestic sewage)✓
- 2इस्पात संरचनाएं
- 3अंश धातु (Trace metals)
- 4पारा (Mercury)
सही उत्तर देखें
घरेलू सीवेज (Domestic sewage)
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