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The progressive increase in the concentration of harmful, non-degradable chemicals at each higher trophic level is called
Abiological magnification
Beutrophication
Cbiodegradation
Dcalcination
Answer & Solution
Correct answer: A. biological magnification
1. Pesticides and other non-degradable chemicals enter food chains.
2. They accumulate more and more at each higher level — **biological magnification**.
3. As humans are usually at the top, the maximum concentration ends up in us.
_Source: Karnataka SSLC (KSEEB) Class 10 Science, Ch15 'Our Environment', §15.1.1_
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