Please address each of the following questions:1. Explain the bubble concept as applied to air quality permitting. What is “cap and trade” and how does this differ from the bubble concept?2. What are mobile and stationary sources? Compare and contrast the regulatory requirements for stationary sources and mobile sources of air pollution.3. What are the basic requirements of the Prevention of Significant Deterioration (PSD) Program? What is considered “major” under this program?For This or a Similar Paper Click Here To Order Now