Which statement best describes ecological succession? it is always caused by human intervention. it sometimes occurs after a disturbance. it always occurs in a predictable pattern. it is a series of rapid changes in an ecosystem.

The correct answer is it always occurs in a predictable pattern.

Ecological successsion is defined as a change in the structure of species of an ecological community over a period of time. The succession that begins in a new environment by uninfluence of pre-existing species is called primary succession. The disruption of pre-existing community because of succession is called secondary succession. Ecological succession happens in a predictable pattern. The ecological communities undergoes predictable change which creates a disturbance or initial formation of new habitat. This changes occurs in an orderly manner and can be best explained by the example of trees how they grow bigger and bigger.

regulation of gene expression. gene expression can be regulated by various cellular processes with the aim to control the amount and nature of the expressed genes. these regulatory proteins bind to dna and send signals that indirectly control the rate of gene expression

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