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A process of deriving from a system of equations a new system with fewer variables, but with precisely the same solutions.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



the death of nonadapted individuals in the course of the struggle for life. Elimination may be nonselective (general) or selective.

Nonselective elimination occurs as a result of environmental factors that exceed the adaptive capabilities of a given group of individuals (that is, a particular population or species). Among such factors, the most common are natural disasters and the catastrophic effects of human intervention, such as floods, droughts, and changes in the landscape (for example, as a result of urbanization). Large-scale elimination may lead to the extinction of an entire species.

Selective elimination, or the death of part of a population, is caused by some individuals’ lower relative capacity for adaptation (as in the case of the spontaneous thinning out of a forest). Selective elimination is a major factor in evolution, since differential rates of survival result in the multiplication of the better-adapted individuals—that is, natural selection.


Shmal’gauzen, I. I. Problemy darvinizma, 2nd ed. Leningrad, 1969.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
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These organs and body systems are designed to process toxins into less harmful substances and eliminate. Exposure to toxins through pollution affects our air, food and water supplies.
New Jersey Governor James McGreevey, a known arts supporter, chose to eliminate state support for arts and culture to help reduce a $5 billion budget shortfall.
The CDC findings are a reminder that despite elaborate screening procedures to eliminate pathogens from the blood supply, infections can still be transmitted through blood products.
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