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D4.2.9—Biomagnification Topic Practice

D4.2.9—Biomagnification Topic Practice
IB Biology syllabusBiology SL/HLFirst assessment 2025

Practise tracing biomagnification through food chains using DDT, DDE, mercury, triclosan or oil pollutants and their health effects.

How this is tested

  • explain why pollutant concentration increases at higher trophic levels
  • interpret food webs to justify higher toxin levels in top consumers
  • link DDT, mercury or triclosan exposure to environmental or human health risks
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