ABSTRACT
In Chapter 6, the atmosphere was introduced as one of the ve main parts of the environment. In this chapter, pollution of the atmosphere is discussed. Atmospheric quality is extremely important for human welfare, in part because of the intimate relationship that we have with air in the atmosphere. It is almost impossible in a practical sense to avoid breathing air as we nd it around us. Toxic air pollutants will get into our lungs. In the innermost alveoli of the lungs where gases are interchanged between air that is inhaled and blood in the bloodstream, a layer only the thickness of a single human cell separates the blood from the air. If the air that we breathe is polluted, we may be harmed by it.
