Charles Darwin - the famous English scientist.
After his trip around the world aboard the "Beagle", based on the material he collected, he created the theory of evolution, which excites the minds of scientists until now.
Charles Darwin himself identified several findings,which prompted him to create his theory. Firstly, it's fossilized remains of ancient mammals, covered with armor like a modern armadillos. Second, Darwin said that as it moves to South America related species replace each other. And, thirdly, he discovered that the different islands of the Galapagos archipelago closely related species differ from each other. These facts do not give rest to the scientist, and on arrival he took up consideration of the evolution of species.
The idea of the origin of species throughnatural selection, Charles Darwin worked for twenty years. As a result, a scientist publishes a book that immediately finds a like-minded passionate and harsh criticism.
The essence of Darwin's theory can be summarized inseveral postulates. According to the findings of the scientist, there is a heritable variation of different characteristics within each species - morphological, physiological, behavioral. This variation can manifest or not manifest itself, but it is always there.
All living organisms multiply in geometricprogression. However, natural resources are limited, and therefore there is a fight for survival as between individuals of the same species, and between species occupying the same ecological niche. only the most adaptable animals survive and produce offspring in conditions of severe competition. Signs that helped parents survive, passed on to offspring by inheritance. Moreover, these advantageous features can also occur as a result of mutations, and then transmitted to descendants. A natural selection of one species living in different conditions, leads to the preservation of various useful features in these two populations, and, consequently, the formation of new species.</ P>