A mixture (x) in water contains suspended solids, organic impurities, inorganic impurities (a), nutrients (b), disease causing bacteria and other microbes. Give names for (x), (a) and (b)?
(X) : waste water or sewage
(a) : Phosphorus and Nitrogen
(b) : Bacteria like cholera (vibrio coma), typhoid (salmonella typhosa) and microbes which cause dysentery.