Final answer:
The experiment is modeling air pollution, specifically acid rain which is formed when pollutants combine with water in the air, creating acids. Acid rain can cause damage to soil, plants, and aquatic organisms.
Step-by-step explanation:
The experiment is modeling air pollution. Acid rain is a form of air pollution that occurs when pollutants such as sulfur dioxide and nitrogen oxides combine with water in the air and form acids. These acids lower the pH of precipitation, causing it to become acidic. Acid rain can damage soil, plants, and aquatic organisms when it falls to the ground or into water bodies.