There are two main theories about the origins of humanity and life: creationism and evolution. Creationism believes in supernatural creation by God, while evolution believes life came from a simple chemical reaction and all organisms share a common ancestor, as supported by fossils. Neither theory is entirely correct, as there is evidence both for and against each. It is important to have a broader view and learn the strong points of both theories, not based on religious beliefs. Homework involves investigating Charles Darwin, the importance of the Beagle in developing his theory of evolution through natural selection, where stronger, better adapted species survive and evolve while others go extinct.