Charles Darwin was an amazing man. He came up with the theory of evolution. Evolution is the way that an entire population changes. Charles Darwin made an incredible journey almost completely around the word to learn more about his they of  theory evolution. He went all over the world but mostly in South America.
       While he was on this trip he came up of another idea. This idea is called Natural Selection. One way to describe this is survival of the fittest. he thought that if one animal is born with some unwanted trait it will die off before it can reproduce. This is a good thing because if the orgamism with the unwanted trait it will be passed on to the offspring and  soon that trait can be passed on to the whole population. 



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