articulo cientifico en ingles sobre la contaminacion del agua , si alguien me puede ayudar
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Water contaminatión
on herath,more than one billion people do not have potable water .by the end of the century it is estimated that 80% of urban dwellers in the world do not edequate supplies of drinking water only a small amount of fresh water Ewater on the planet
on herath,more than one billion people do not have potable water .by the end of the century it is estimated that 80% of urban dwellers in the world do not edequate supplies of drinking water only a small amount of fresh water Ewater on the planet
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