The death toll from devastating floods that have ravaged southern Brazil for days reached 100 on Wednesday, authorities said, as the search continued for dozens of people still missing.
Environment
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Water pollution is the contamination of water bodies such as lakes, rivers, oceans, and groundwater by human activities. All water pollution affects organisms and plants that live in these water bodies and in almost all cases the effect is damaging either to individual species and populations but also to the natural biological communities. It occurs when pollutants are discharged directly or indirectly into water bodies without adequate treatment to remove harmful constituents.
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