Introduction

Natural Selection

Charles Darwin’s natural selection theory was officially revealed into his book “On the origin of species”, the most relevant book in biology released in November of 1859, when the Catholic’s ideology had an important place in society mind, actually even more than science; belief that this British naturalist had after all his research around the world in the Beagle trip in which he was about 22 years on board, and so now considering the father of the evolution theory. In this historical context, his theory was a controversial revelation, due to that is about the different species evolution around the world, that means, a natural process to evolve their structure or instinct in a gradual way and not an immediate change because of the God wishes.

Charles Darwin

 In order to support this idea, this author writes in chapter XVI; recapitulation and conclusion, contents of Biology, specifically of the animal and plant kingdom. Variabilities about those new characteristics that are springing up with, or not, human intervention, in other word, domestication, as well of hybrid descendants and their reproduction probability, and besides, Geology, focus in emigration of species and fossilized remains which have the proof that there exists the possibility of a common ancestor among the organic species, therefore, their relation. Those are some of the scientific disciplines or important topics that would help to explain this natural process, so as to help with solid arguments and give an answer to the opposite ideas that rule during this context, also from persons that don't agree with Darwin’s theory.