Chapter 16 Review Sheet. 1. Know how Hutton and Lyell, Lamark, and Malthus contributed to Darwin’s theory of evolution. 2. What is survival of the fittest? Give a real example. 3. What is struggle for existence? Give a real like example. 4. What is an adaptation? 5. What is variation? Why is it important for evolution? 6. What is common descent? 7. Know the evidences of evolution. 8. What are homologous structures? How does it support evolution? 9. What are vestigial structures and how does it support evolution? 10. What is natural selection? What does it require to occur? 11. Explain how a new species might form. 12. Know the “Evolution Lab” we did in class. What 2 things created a struggle for existence? 1. What is evolution? Use an example from class to support your explanation 2. WHAT is “Comparing Anatomy and Embryology.” HOW does it support evolution? 3. Variation is critical for evolution to occur. a. Why is variation critical to evolution? How does it contribute to evolution? b. What are some ways in which variation can occur within a population of species?