RAIN
type: Concept

ACID RAIN
type: Concept
change note: 2014-04-14 14:35:58.0 [128.183.164.42] Move Concepts delete broader relation (null); add broader relation (ACID RAIN [f9405e92-0c1c-4443-9cc4-45d662d8b5f2,83875] - RAIN [09a57dc7-3911-4a65-9f12-b819652b8671,84455]);
definition: Rain having a pH lower than 5.6, representing the pH of natural rainwater; the increased acidity is usually due to the presence of sulfuric acid and/or nitric acid, often attributed to anthropogenic sources.
in scheme: sciencekeywords