Congratulations on completing the Pre-Assessment! You can retake the Pre-Assessment, access the Study Guide, or exit. The Study Guide is designed to help you prepare your study plan for the chapter. You can print the Study Guide to review the questions that you answered, and refer to the textbook pages that are cited in the Study Guide to learn more. We also suggest that you use the Interactive Overview available on this Web site to help you focus on the critical concepts and skills taught in this chapter before you begin your studies. After you complete the chapter, use the Online Games available on this Web site and the Interactive Review Activities available on the BookOnCD to reinforce what you have learned and assess your comprehension.