DP Biology (first assessment 2025)

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Question EXEX.2.HL.TZ0.c

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Date Example questions Example questions Marks available [Maximum mark: 3] Reference code EXEX.2.HL.TZ0.c
Level HL Paper 2 Time zone TZ0
Command term Explain Question number c Adapted from N/A
c.
[Maximum mark: 3]
EXEX.2.HL.TZ0.c

Thick layers of peat found under dipterocarp forest soils are being lost by rapid decomposition and combustion. Explain how this may contribute to the current biodiversity crisis.

[3]

Markscheme
  1. decomposition/ combustion of peat releases greenhouse gases/ carbon dioxide/ methane;
  2. increased greenhouse effect/ global warming;
  3. changes in climate/ extreme weather/ increasing temperatures/flooding destroy habitats;
  4. species that cannot adapt/migrate are lost;

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