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an almost self-contained ecological unit.
(also called homeostatic control) the self-regulation and maintenance of a constant stable...
broad group (taxon) in the biological classification system, which is then divided into kingdoms...
the structural and functional unit of the kidney, which filters the blood and produces urine....
the area that occurs between the high water and low water marks. It is exposed to the air at low...
a medical condition in which the body is unable to use its own insulin effectively.