The word organic evolution is made up of two words "organic" means "living organisms" and "evolution" means "unfold"..........So organic evolution is the unfolding of the process of formation of different types of organisms.......As we see that millions of different types of plants and animals around us. All these forms of life came into existence from very simple unicellular organism modified themselves so that they can adapt themselves with the changing environment.These modification and variations were then passed on to the next generations, which resulted in formation of new species of organisms.......Thus, according to the concept of organic evolution, the present day animal and plants have been evolved by a process of gradual change in the earlier simple forms of life ,which took place in millions of years. The process of evolution is very slow and it is going on still today.But due to slow rate we are not able to observe it.......

Organic evolution is the term used to describe the scientific process of identifying a genetic change in a species or within a group of species over an amount of timeand it's evidence isThe fossil of Archaeopteryx looks like bird but bears a number of other features found in reptiles. This provides a clue that birds are evolved from reptiles.