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.
D. Overproduction of offspring. Darwin's theory of natural selection states that species tend to overproduce due to limiting resources. This sets up competition or a struggle for existence. Those most fit in that environment are likely to survive, passing those favorable genes on to their offspring. In time, a new species evolves from the accumulation of favorable genes. Punctuated equilibrium is a theory that was formulated after Darwin's theory and it states that species remain relatively stable for long periods of time and then, due to some natural catastrophe, change rapidly in a short period of time.