APFIVE Biomagnification of DDT in a Food Web
High tissue concentrations of DDT and significant eggshell thinning have been documented in peregrine falcons. Which process best explains why top predators, such as falcons, are often more severely impacted by persistent toxins than organisms at lower trophic levels?
A
Direct exposure to agricultural runoff
B
Natural selection for pesticide resistance
C
Biogeochemical cycling of nitrogen compounds
D
Biomagnification of persistent compounds through the food web
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