Overview
I'm working on a chemistry question and need guidance to help me learn.
1. Visit the “State of the Air,” a website posted by the American Lung Association. How many days a year does your Zip Code have “orange days” and “red days” for particulate pollution? What is the difference? https://www.lung.org/research/sota
2. Go to https://gispub.epa.gov/air/trendsreport/2017/#pm2_5_composition
Select three regions of the US and summarize their composition trends for PM 2.5 pollution. What are some possible sources for these particulates, and why do their relative concentration profiles vary by quarter?