Have you ever heard of a British scientist named Charles Darwin? It is he who developed the theory of evolution. He even had a little motto, “survival of the fittest”, which means that natural selection chooses those who are best suited to their living environment. Those who survive reproduce and have new babies with the gene to survive in the environment, unless something changes. That said, some traits are more common in a population because the traits increase an individual's likelihood of surviving and reproducing in its environment. Evidence includes male peacocks with their colorful tails, Hawaiian climbing gobies and pocket mice among the rocks. Charles Darwin wondered why male peacocks had such beautiful, flamboyant tails if this made it more difficult to run and escape predators. Darwin later discovered that male peacocks had tails so large and beautiful that they attracted a mate, the female peacock. Female peacocks choose mates with the most colorful and showy feathers. The father can pass on his beautiful tail genes to his children, who may one day have children and pass them on...