200 A Industrial fuse. 80 kA breaking capacity. In electronics and electrical engineering, a fuse is an electrical safety device that operates to provide overcurrent protection of an electrical circuit including the source of power and the load.
In order for natural selection to operate on a trait, the trait must possess heritable variation and must confer an advantage in the competition for resources. If one of these requirements does not occur, then the trait does not experience natural selection.
Types of Natural Selection. Directional selectionDirectional Selection:A type of selection that removes individuals from one end of a phenotypic distribution and thus causes a shift in the distribution. occurs when natural selection favors one extreme of continuous variation.ver time, the intermediate states become more common and each extreme variation will become less common or lost. Natural selection can occur with or without environmental change. 1  In a constant environment, natural selection will keep a population stable and essentially maintain the status quo.