sentence: Acid rain can have harmful effects on plants, animals, and on humans.
sentences_before: Acid rain' is rain that is unusually acidic.
sentences_after: Acid rain is caused when gaseous compounds of ammonium, carbon, nitrogen, and sulphur are released into the atmosphere. The wind carries the gases high into the sky. There the compounds react with the water in the atmosphere and acids are made.
concept_name: acid rain
headings: Acid rain
categories: Precipitation Water pollution