Why are contaminants such as TCE (trichloroethylene) and PCB (polychlorinated biphenyls) so difficult to remove using traditional methods? They easily adsorb onto organic matter in the environment They are too toxic to be safely handled They are so volatile they escape into the atmosphere so they're impossible to contain O They naturally degrade into harmless forms that cannot be distinguished from the natural

Which of the following media selects for gram negative bacteria by inhibiting the growth of gram positives that typically incorporate its dye component into their relatively bigger cell walls?     blood agar     EMB     Mannitol salt agar     Simmon citrate agar     urease broth

Why must water be subjected to microbiological analysis?

Learn about the many adulterants that have been introduced to milk and other dairy products. Detection of microorganisms in dairy products: Table sugar is detected in the following ways: Determination of the presence of starch Detection of Acids and Bases Soap Detection and Identification Formalin is being looked for. Detection of Ammonium Sulfate: in addition to the tests for detecting them, there are other tests for detecting them.