The process of piling up of some class of elements in a system due to a positive feedback in its production.

When this process turns exponential, for the lack of a countervailing negative feedback, it may easily destroy the affected system, as for example in runaway population explosions This is due to a double cause:

- internal clogging of the system, whose functions become impaired, due to its excessive density;

- starvation of the elements, deprived of a sufficient environmental flux of resources to maintain themselves. The death of the starving elements within the system, poisons it.

1) general information

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