Paper 1 · People, Development and Environment
Which of the following results in bioaccumulation and contamination of food chains?
APesticides ✓ Correct
BPolychlorinated biphenyls
CPAN
DAll of the above
Correct answer: (A) Pesticides — Pesticides result in bioaccumulation and food-chain contamination, so that is the answer.
Explanation
★Pesticides result in bioaccumulation and food-chain contamination, so that is the answer.
★Pesticides do not break down easily and build up in living tissue.
★As they pass up the food chain, they contaminate it.
★So pesticides cause bioaccumulation and contamination of food chains.
★The book keys pesticides as the answer here.
★So the answer is pesticides.
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