When sulfur compounds react with water in the atmosphere, they can produce acid rain.

Here's a breakdown:

* Sulfur dioxide (SO2) is a major air pollutant released primarily from burning fossil fuels.

* In the atmosphere, SO2 reacts with water (H2O), oxygen (O2), and oxidants like ozone (O3) to form sulfuric acid (H2SO4).

* Sulfuric acid dissolves in water droplets and falls to the ground as acid rain.

Acid rain can have harmful effects on:

* The environment: Acid rain can damage forests, lakes, and soil, impacting ecosystems.

* Human health: Acid rain can contribute to respiratory problems and can also contaminate drinking water.

* Infrastructure: Acid rain can damage buildings, monuments, and other structures.

Let me know if you have any other questions!