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POLLUTION IS THE DEGRADATION OF NATURAL ENVIRONMEN...
POLLUTION IS THE DEGRADATION OF NATURAL ENVIRONMENT BY EXTERNAL SUBSTANCES INTRODUCED DIRECTLYOR INDIRECTLY
DAP AN ON TAP ANH 8 DOT 5
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1. Pollution is the degradation of natural environment by external substances introduced directly
or indirectly.
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DAP AN ON TAP ANH 8 DOT 5