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IB ESS SL 5.1.8 Soil Flow Diagrams Questions

Practise IB ESS SL 005.001.008 by applying soil flow diagrams concepts to environmental systems questions.

Syllabus
First assessment 2026
Course
ESS SL
Level
SL

Exam points

  • identify soil storages and flows linking the atmosphere, lithosphere and living organisms, including weathering, erosion, deposition, diffusion, evaporation, precipitation, denitrification and biological uptake
  • construct labelled flow diagrams with correctly directed arrows and annotate each flow with an appropriate example of matter, including leaching and decomposition from the A-horizon mineral store
  • apply and evaluate a soil-system flow diagram using evidence, checking storage, process direction and matter examples and explaining implications for nutrient and material cycling

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Study 5.1.8—Soil flow diagrams conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB ESS SL 5.1.8 Soil Flow Diagrams Questions question 1

[Maximum number: 2]

Soil quality is important for global food production systems.

Horizons in a typical soil profile

Figure:Horizons in a typical soil profile

Draw a flow diagram to show the flows of leaching and decomposition associated with the mineral storage in the "A" horizon in the soil-profile diagram shown above.

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