1. water pollution
Wikipedia definition
2. Water pollutionWater pollution is the contamination of water bodies. Water pollution occurs when pollutants are discharged directly or indirectly into water bodies without adequate treatment to remove harmful compounds. Water pollution is defined as the undesirable change is physical, chemical and biological characteristics in the water bodies which may cause harmful effects on human and aquatic life. Water pollution affects plants and organisms living in these bodies of water.
Read “Water pollution” on English Wikipedia
Read “水質汚染” on Japanese Wikipedia
Read “Water pollution” on DBpedia


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