Pxजलवायु क्रिया, जलवायु संरक्षण, जलवायु परिवर्तन, पर्यावरण संरक्षण, कचरा, प्रदूषण, वायु प्रदुषण, कोयला आधारित बिजली स्टेशन, उद्योग, कृषि, परिस्थितिकी
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