Hierarchy classification:

1. top of the aat hierarchies
2. Associated Concepts Facet
3. Associated Concepts (hierarchy name)
4. environmental concepts
5. pollution
6. [pollution by agent]

Anotations

Scope note:

Form of precipitation (rain, snow, sleet, or hail) containing high levels of sulfuric or nitric acids. It is produced by the combination of atmospheric water with oxides released when hydrocarbon fuels are burned. Acid rain damages architecture and outdoor sculpture; it kills or harms forests, crops, and aquatic life.