Rainwater contains a certain amount of acid. However, in industrial areas of Europe and North America, some rainfalls have higher acid concentrations than in other places due to atmospheric pollution from combustion fumes and smoke emitted by factories.
Rainwater combines with carbon dioxide in the atmosphere to form carbonic acid, which is present in very low concentrations. This weak acid can gradually decompose limestone.
Rainwater also interacts with emissions from factories. These emissions can be carried far away by the wind. When absorbed by moisture in the air, the gases transform into sulfuric acid and nitric acid. Rain then brings these acids to regions far from the original pollution source.
Acid rain accelerates the process of erosion, meaning it wears away rocks. It also gradually pollutes many lakes and waterways, posing a significant threat to the wildlife inhabiting those areas.
H.T
