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Why is the use of pesticides problematic for ecosystems?
Answer & Solution
Correct answer: C.
1. Pesticides absorbed by plants are eaten by herbivores.
2. Each trophic level concentrates the chemicals further (biomagnification).
3. Top consumers, including humans, carry the highest residue burden.
_Source: NCERT Class 10 Science, Ch 13 "Our Environment", §13.1.1_
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