Read through the following questions and answer two of them in your journal. Your answers should be complete, and must be written in standard, grammatically correct English. 1. Define social change and discuss the four social revolutions. 2. Summarize Marx's dialectical process of historical change. 3. Define and discuss the three processes of social change, according to Charles Ogburn, providing at least one example of each. Define cultural lag, and explain its effects on culture. 4. What are postindustrial (postmodern) societies? Discuss the role of computers in education, business and finance, and warfare. Discuss two concerns that some people have about the computer. 5. Define social movements, proactive social movements, reactive social movements, and social movement organizations, providing at least one example of each. 6. List and discuss the five stages of social movements. 7. What is environmental sociology? List and discuss its nine key principles.