Parameter Tree:
EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > ECOSYSTEM FUNCTIONS > OXYGEN DEMAND

Definition:
Oxygen demand or biochemical oxygen demand is the amount of oxygen that will
be absorbed or "demanded" as wastes are being digested or oxidized in
both biological and chemical processes. 


Reference:
Nebel, Bernard J. Nebel and Richard T. Wright. Environmental Science-the Way
the World Works. 1998. Prentice-Hall, Inc. Upper Saddle River, New Jersey.