Concept: Sulfur dioxide
SO2 emissions lead to the formation of acid rain.
Explanation:When
SO2 is released into the atmosphere, it reacts with water vapor and oxygen.
This reaction produces sulfuric acid:
H2SO4.
The acid dissolves in rain, forming acid rain.
Acid rain damages aquatic life, forests, buildings, and soils.
It is the primary environmental concern linked to
SO2.
Answer: Option A: Formation of acid rain.