Evolution is the change of inherited characteristics over a population in a period of time. Some people believe evolution to be a theory because it questions their religious beliefs. I am not an expert, but a lot of what I know to be true of evolution is ideas that I have learned form Charles Darwin. I know that natural selection proves survival of the fittest. I also know that evolution can be seen through things such as fossils and natural remainings. Lastly, a concept that I’m sure everyone has heard about, our existence. I have heard multiple times that humans are descendants of apes, that we transitioned into cavemen, and that is how we have evolved into the humans we are today. Although I am not completely sure of some of the ideas that I hear about evolution, I am sure there is more to it than our physical differences.