8.3.7—Acid rain management

Syllabus
First assessment 2026
Objective
8.3.7
Level
HL

Stop the Acid at the Right Level

Acid deposition can be managed by changing the activity, controlling release, or restoring damage; those levels prevent different parts of the causal chain.

Reduce fossil-fuel use at source, use scrubbers or converters at release, and use healthcare or lake liming for existing damage. Prevention limits new loading; restoration cannot remove upstream emissions.

A scrubber cuts sulfur emissions from a plant, while liming an acidified lake neutralizes stored acidity after deposition.

Restoration such as liming; pair it with source reduction to prevent recurrence.

Restoration is not source control.