A. Life has been, and is, very diverse 1. This diversity is the result of evolution 1. Evolution has occurred over a vast span of time 3. Species can change over time 4. Composition of species can change over time.
Species can go extinct.
C. Evidence for evolution 1. A fossil is any evidence of life preserved in the geologic record. Fossil evidence indicates that life has changed over time. Transitional fossils possess a mix of traits from two currently separate groups. Evolution is descent with modification through time.