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(Environmental Engineering) The amount of molecular oxygen dissolved in water.
(Environmental Engineering) Organisms which do not have a cellular membrane.
(Environmental Engineering) One celled microorganisms which do not have a nuclear membrane.
(Environmental Engineering) (FS) are the solids that do not volatilize at 550°C.
(Environmental Engineering) A group of organisms that do not require molecular oxygen. These organisms, as well as all known life forms, require oxygen. These organisms obtain their oxygen from inorganic ions such as nitrate or sulfate or from protein.