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The phenomenon by which non-biodegradable chemicals get progressively concentrated up the food chain is called:
Answer & Solution
Correct answer: D.
1. Pesticides not broken down by organisms remain stored in tissues.
2. At higher trophic levels, the concentration accumulates.
3. This is biomagnification or biological magnification.
_Source: NCERT Class 10 Science, Ch 13 "Our Environment", §13.1.1_
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