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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