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control| In biology, the process by which a tissue, an organism, a population, or an ecosystem maintains itself in a balanced, stable state. Blood sugar must be kept at a stable level if the brain is to function properly, and this steady state is maintained by an interaction between the liver, the hormone insulin, and a detector system in the pancreas. |
| In the global ecosystem, the activities of the human race are endangering the balancing mechanisms associated with the atmosphere in general and the greenhouse effect in particular. |
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