IB ESS 4.4.2 Plastic debris accumulation

IB Environmental Systems and Societies syllabusESS SL/HLFirst assessment 2026

Practise explaining why persistent plastic debris accumulates in marine systems and how it can affect organisms and food chains.

How this is tested

explain why non-biodegradable plastics can be more serious than other solid waste
link plastic accumulation in gyres or food chains to impacts on marine organisms

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