General Knowledge Ecology and Environment Environmental pollution

ପାର୍ଟିକ୍ୟୁଲେଟ୍ ମ୍ୟାଟର କ’ଣ?

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କଠିନ ଅବଶିଷ୍ଟ

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ବାୟୁ ପ୍ରଦୂଷକ

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ଜଳ ପ୍ରଦୂଷକ

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ମୃତ୍ତିକା ପ୍ରଦୂଷକ

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