Same chapter3 marksDifficulty: Medium
What is biomagnification? Give one example.
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3 marksDifficulty: Medium
What is a non-biodegradable pollutant? Give two examples and state why they are a problem.
Original Khojo Papers practice question — not from a past board paper.
Answer
A non-biodegradable pollutant cannot be broken down by micro-organisms and so persists in the environment. Plastics and pesticides such as DDT are examples. They accumulate in soil and water, are passed along the food chain and become more concentrated at each level, and they remain harmful for decades.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
A biodegradable pollutant such as sewage is harmful only until it decomposes.
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