Here's why:
* Fossil fuels (coal, oil, and natural gas) contain sulfur and nitrogen. When these fuels are burned, sulfur dioxide (SO2) and nitrogen oxides (NOx) are released into the atmosphere.
* These gases react with water, oxygen, and other chemicals in the air to form sulfuric acid (H2SO4) and nitric acid (HNO3). These acids are then dissolved in rainwater, making it acidic.
Other sources of acid rain-causing gases include:
* Industrial processes: Some industrial processes, such as metal smelting and power generation, also release sulfur dioxide and nitrogen oxides.
* Vehicle emissions: Internal combustion engines in vehicles release nitrogen oxides.
* Volcanic eruptions: Volcanoes can release sulfur dioxide and other gases that contribute to acid rain.
It's important to note that acid rain is a complex phenomenon with multiple contributing factors. However, burning fossil fuels is the dominant source of the gases that cause acid rain.
