A steady course in which something changes into a diverse and unambiguously more composite form can be described as evolution. Evolution is the method by which an organism converts to a more erudite form over time and in retort to its milieu. The Theory of Evolution is presently the most widely held conception of how life reached its present state. Evolution as a biotic mechanism is driven by natural selection. This theory is favored by many researchers to elucidate occurrences in nature, so much so that it is usually presumed as actual in most lessons.