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Sigma KEE - AcidRainfall
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AcidRainfall
AcidRainfall is the subclass of Raining in which the precipitate contains harmful amounts of SulphurDioxide, NitricOxide or NitrogenDioxide. The standard for acid rain is below 5pH.
Relationships      
Parents Raining Raining is a Precipitation Process in which Water falls in a Liquid state. The size of an raindrop is between 0.1-9 Millimeter in approximateDiameter.


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