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Why is the use of pesticides problematic for ecosystems?
AThey evaporate immediately (option)
BThey are too expensive
CPesticides bioaccumulate up the food chain and harm top consumers including humans
DThey feed only insects
Answer & Solution
Correct answer: C. Pesticides bioaccumulate up the food chain and harm top consumers including humans
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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