What environmental phenomenon is caused by the reaction of sulfur oxides and nitrogen oxides with water?

• A. Ozone depletion
• B. Acidic precipitation
• C. Global warming
• D. Smog formation

Answer: (B)

The phenomenon caused by the reaction of sulfur oxides and nitrogen oxides with water is known as acidic precipitation, often referred to as acid rain. This process occurs when these oxides, which are primarily emitted from vehicles and industrial processes, react with water vapor in the atmosphere to form sulfuric and nitric acids. When precipitation occurs, these acids are carried back to the Earth's surface, resulting in rain, snow, or fog that has a lower pH than normal.

This acidic precipitation can have several harmful effects on the environment, including damage to forests, soil, and aquatic ecosystems. It can lead to the leaching of nutrients from the soil and harm fish and other organisms living in acid-sensitive waters. Understanding this process is crucial for comprehending how air pollution originates and its far-reaching consequences on both local and global scales. The other options—ozone depletion, global warming, and smog formation—are related to different environmental issues and thus do not accurately describe the reaction involving sulfur oxides and nitrogen oxides with water.