1. Air pollution – Local and Global Concerns Many atmospheric pollutants are naturally occurring compounds. What are the key human activities that cause levels of these compounds to become problematic? What is a biogeochemical cycle? Give an example of a local or regional-scale biogeochemical budget. Why do we care about global budgets? What is a flux? A sink? A transformation process? Discuss the cycling of: sulfur nitrogen carbon What sorts of atmospheric and other concerns are caused by each of these in their ‘polluting’ form? Briefly describe the origin and problems associated with lead ozone CFC’s

18. A few others: Lead VOC’s (volatile organic compounds) Particulates CFC’s (see ozone)