This unit has taught me a lot about how species and how life in general came to be. It also taught me about the tale of life. I never knew how many times nearly all life had ceased to exist thanks to mass extinctions. I also never thought that through similar processes completely different animals could evolve to fill similar niches, known by professionals as convergent evolution. I really enjoyed learning about all of the concepts I had never heard of. This unit taught me a lot about the source of life and the some insight into the eventual fate of ourselves.