The act of performing a task several times is called?

Repetition

Explanation:

In science, the act of performing an experiment several times is called repetition. This involves obtaining multiple trials of an experiment in order to ensure accuracy and precision.

Multiple trials ensures that the best result which eliminates errors represents the findings.

Repetition gives a pool of important statistics to work with which can raise the confidence limit and provide more representation.  

mountains can affect the climate of nearby lands. in some areas, mountains block rain, so that one side of a mountain range may be rainy and the other side may be a desert. much of airborne moisture falls as rain on the windward side of mountains.

explanation:

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