|
The example for non-biodegradable pollutant is |
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|
(a) |
sulphur dioxide |
(b) |
lead vapours |
(c) |
sewage |
(d) |
corrugated cardboard |
|
The example for non-biodegradable pollutant is |
|||||||
|
(a) |
sulphur dioxide |
(b) |
lead vapours |
(c) |
sewage |
(d) |
corrugated cardboard |