Plants, too, are affected by ozone. Exposure to relatively low concentrations can cause reduced growth and vigor, making them more vulnerable to damage from drought, insects or disease. Carbon Monoxide Carbon monoxide, a single atom of carbon combined with one of oxygen, is highly toxic. When inhaled, this odorless gas attaches to red blood cells, preventing them from absorbing oxygen. People with heart and lung problems are especially sensitive to this gas.
Automobiles contribute the majority of carbon monoxide found in urban areas.
Forest fires also produce carbon monoxide, but are temporary and affect only the local area. Particulates not only limit visibility but also cause health problems. Inhaled particles become trapped in the lungs exposing this sensitive tissue to a variety of potentially damaging compounds. As water travels trough me air, it reacts with carbon dioxide, sulfur oxides and nitrogen oxides to form acids. This acid rain or snow changes me chemical balance in the soil and increases the acidity of lakes and streams.