Same chapter3 marksDifficulty: Medium
What is thermal pollution and what harm does it do?
Pollution
3 marksDifficulty: Medium
What is biomagnification? Give one example.
Original Khojo Papers practice question — not from a past board paper.
Answer
Biomagnification is the increase in the concentration of a persistent pollutant at each successive level of a food chain, because the pollutant is not broken down or excreted and accumulates in the tissues. DDT, which reaches its highest concentration in fish-eating birds, is the classic example.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
This is why top carnivores suffer most from pollutants that seem harmless at low concentrations in water.
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