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| diffuse pollution; diffuse pollution Pollution from widespread activities with no one discrete source, e.g. acid rain, pesticides, urban run-off etc. | |||
| non-point source pollution | |||
| pollution from non-point sources | |||
| non point source pollution; NPS pollution | |||
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pollution diffuse : 9 phrases in 3 subjects |
| Environment | 6 |
| Geology | 1 |
| Natural resourses and wildlife conservation | 2 |