Acid rain is the kind of precipitation that contains larger amounts of acid than normal. Rainwater is usually slightly acidic, with pH level between 5 and 6.
Acid rain can occur naturally, from the volcanic eruptions.
However we are also causing this, from the emission of vehicles and of industrial plants that include the burning of fossil fuels.
What's the impact of acid rain?
• Deteriorates building that is made of rock
• Acidification of soil and lakes
• Risk of contamination to lakes/water sources
• Deteriorates trees and forests