Exercise 1: Air Pollution and Covid-19 The Covid-19 pandemic has caused a lot of lifestyle changes around the word due to quarantine efforts to hinder disease spread. Due to these changes, human activity has decreased ad resulted in improved air quality in certain areas. Write a 500-word essay selecting two of the air contaminants discussed in lab today and how their concentrations have changed as a result. You are required to use at least three sources to back of your claims and may use the aid of figures. Exercise 2: Air Pollution in Your Zip Code (Allen, Texas, 75013) 1, Go to https://www.airnow.gov/aqi/aqi-basics. What is the AQI and how does it work? 2, What are the five major pollutants used to determine AQI? 3, Now go to http://www.airnow.gov/ and enter your zip code. What is the current AQI for your zip code? What is the Primary Pollutant for your area? What warnings are given for each pollutant? 4, What is the forecast pollutant for the next few days? Are there any new pollutants or new warnings present? 5, Ground-level ozone is a common air pollutant in urban areas. What is the difference between ground-level ozone and stratospheric ozone? How is ground-level ozone formed? More information about ozone can be found at https://www.epa.gov/ground-level-ozone-pollution/ground-levelozone-basics