"It is not the strongest of the species that survives, nor the most intelligent that survives. It is the one that is the most adaptable to change.”
section, theory, and similar.
Charles darwin came up with a theory but he had facts to suport it, he said that the section of animals that was fit, they had a better chance to survive. There are similar theory's to this one, but i guess that this one is the most beliebable, because animals need to protect themself if they can't run.