Hierarchy classification:

1. top of the aat hierarchies
2. Associated Concepts Facet
3. Associated Concepts (hierarchy name)
4. environmental concepts

Additional parents:

1. top of the aat hierarchies
2. Associated Concepts Facet
3. Associated Concepts
4. scientific concepts
5. contamination

Narrower term/s

• [pollution by location or context][+]
  • air pollution [+]
    • smog
    • indoor air pollution
  • soil pollution
  • water pollution [+]
    • marine pollution
• [pollution by agent][+]
  • chemical pollution
  • noise pollution
  • thermal pollution
  • acid rain
  • light pollution
  • visual pollution

Anotations

Scope note:

The introduction of or condition of having harmful or otherwise undesirable substances or products in the environment; for the substances themselves use "pollutants."