It is particularly damaging to lakes, streams, forests, and the creatures that inhabit these ecosystems (EPA). The main cause of acid rain is the oxidation of sulfur, nitrogen and carbon compounds (Goyer). Acid rain is not only harmful to nature, but also to humans directly; it accelerates the degradation of construction materials, particularly monuments or historic buildings. Acid rain is also harmful to human health. While acid rain cannot burn the skin, it is linked to several indirect health effects (Boumis). Studies by researchers such as Dr. Goyer's "The Effects of Acid Rain on Human Health" have shown that people suffering from bronchial conditions or asthmatic tendencies are more prone to episodes of bronchial discomfort or inflammation. when exposed to chemicals found in acid rain.