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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) ?
 
A mixture of (x) in water contains suspended solids, organic impurities, and inorganic impurities, such as nitrates, phosphates, and (a), nutrients like phosphorous and (b), disease-causing bacteria, and other microbes.