This activity will help you meet these educational goals: Content Standards—You will understand how the role of government in a market economy often includes providing for national defense, addressing environmental concerns, defining and enforcing property rights, attempting to make markets more competitive, and protecting consumers’ rights. Directions Read the instructions for this self-checked activity. Type in your response to each question, and check your answers. At the end of the activity, write a brief evaluation of your work. Activity In this activity, you’ll take a closer look at some environmental regulations that the government has placed on industry in the United States. Question 1 Read about one aspect of the Clean Air Act to learn more about how the US government is intervening in the economy through environmental legislation. Then, answer the questions based on what you read. Part A How does acid rain form?