In an aquatic ecosystem, the phenomenon of biomagnification can best be studied in the case of _________.
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A.
phosphates
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B.
organochlorine
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C.
DDT
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D.
chlorine
Correct Answer:
C. DDT
Explanation:
Biomagnification is the process where the concentration of toxic substances increases at each successive level of a food chain. In aquatic environments, this phenomenon is most effectively demonstrated through the study of DDT (dichlorodiphenyltrichloroethane). As a persistent organic pollutant that is fat-soluble and resistant to environmental degradation, DDT is absorbed by microorganisms and gradually accumulates in higher concentrations as it moves from small fish to apex predators like predatory birds and large mammals. Other substances like phosphates and chlorine do not exhibit this specific bioaccumulative behavior in the same manner, making DDT the primary example for studying these ecological impacts.
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