river pollution |
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navigate by keyword : abstract background canal chemical chemicals city cleanup conservation contamination corrosion danger dangerous decay deep derelict desolate dirt dirty disaster discard disgusting drain dump earth ecology energy environment factory fatal filthy flow flowing garbage green grey grime grunge industrial industry influence layer layers life liquid mire muck natural nature pattern plant pollute polluted pollution pond pouring problem recycle recycling refinery resources river ruin rusty safe safety sea sewage sewer stream substance technology texture toxic trail trash unclean unhygienic urban waste water |
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Water pollution and environment conservation. |
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