Environment & Ecology · Environmental Ecology
निम्नलिखित में से कौन सा एक अजैव निम्नीकरणीय (non-biodegradable) प्रदूषक है जो बिना अपघटन के लंबे समय तक पर्यावरण में बना रहता है?
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- 3कागज का कचरा
- 4घरेलू सीवेज (वाहित मल)
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