CBSEGrade 11ChemistryEnvironmental Chemistry

Can Acid Rain Revitalize a Polluted Ecosystem?

The lake in your town is suffering from acid rain, causing the death of several aquatic species. The local government has proposed two possible solutions: increasing the pH of the lake through artificial liming or introducing acid-tolerant species. Which approach do you think would be more effective, and why?

💬 1 answers0 votes👁 48 views07 September 2026

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📌 CONCEPT: Acid rain can have both detrimental and beneficial effects on a polluted ecosystem, depending on the approach taken to revitalize it.

Acid rain can lead to the death of several aquatic species, but introducing acid-tolerant species can help restore balance in the ecosystem.

📐 RULE / FORMULA: The key principle is to restore the natural pH balance of the lake while promoting biodiversity.

💡 WORKED EXAMPLE: Let's consider a lake with a pH of 4.5. Introducing acid-tolerant species, such as certain bacteria and microorganisms, can help break down pollutants and restore the lake's ecosystem. As these species thrive, they can also help increase the pH of the lake.

⚠️ COMMON MISTAKE: One common mistake is to solely rely on artificial liming to increase the pH of the lake, which may not address the underlying issue of pollution and biodiversity loss.

07 Sept 26