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8th Science Semi English Pollution
Teacher's Name : Shaikh Shirin Haider (Urdu School Rupeenagar)
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1. Natural polluttants are destroyed in due course of time by .............
2 points
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2. Air pollutas with ...... cause colour cange in paints, oil painting, nylon, etc
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3. Boards indicating the ......... are displayed in busy squares in metro cities.
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4. Soil ...... decreases due to pollution
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5. Problem of....... pollution increase due soil pollution.
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