Acidification: AP Environmental Science Definition

What is acidification in environmental science?

In AP® Environmental Science, acidification refers to the process by which natural environments, such as soils and bodies of water, become more acidic due to increased concentrations of hydrogen ions (H⁺).

This is often caused by atmospheric pollution, particularly the release of sulfur dioxide (SO₂) and nitrogen oxides (NOₓ), which lead to acid deposition.

Ocean acidification, another key example, results from the absorption of excess carbon dioxide (CO₂) from the atmosphere, lowering the pH of seawater and threatening marine ecosystems.

Acidification can have harmful effects on biodiversity, soil fertility, and aquatic life, making it a critical issue in environmental science.

Acidification Revision Resources to Ace Your Exams

Save My Exams has a great range of study guides to explore the topic of acidification in more detail and master other key related terms and concepts such as acid deposition, atmospheric pollution, and sources of pollution.

College Board AP® Environmental Science Study Guides 2020 resources.