Burning coal releases sulfur compounds into the air. What does rain falling through them become?

1. Coal often contains sulfur, and burning it releases sulfur dioxide gas. 2. Rain falling through that gas dissolves it. 3. The dissolved gas turns the rainwater into weak sulfuric acid. 4. That acid rain lowers the pH of lakes and kills the animals living in them. 5. It also eats away at stone buildings and monuments over the years. _Source: OpenStax Biology 1e (CC BY 4.0), Chs 44 and 46, section 46.3 Biogeochemical Cycles_