Living in the Environment 18th Edition by Tyler Miller,Scott Spoolman

Exercise 21

Suppose someone tells you that carbon dioxide (CO 2 ) should not be classified as an air pollutant because it is a natural chemical that is part of the carbon cycle (see Figure 3-17, p. 66) and a chemical that we add to the atmosphere every time we exhale. Explain the faulty reasoning in this statement about CO 2.