Acid rain

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Terms & Synonyms

Official WHO Definition

Precipitation that has a pH lower than about 5.0, the value produced when naturally occurring carbon dioxide, sulfate and nitrogen

oxide dissolve into water droplets in clouds. Increases in acidity may occur naturally (e.g. following emissions of aerosols during volcanic eruptions) or as a result of human activities (e.g. emission of sulfur dioxide during fossil fuel combustion).

Other Definitions

Contents

Interpretations and Explanations

References

WHO, WMO, UNEP (2003), Climate change and human health: risks and responses

WHO Lexicon page (translations and examples)

See also

External Resources

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