IB ESS HL 5.1.4 Soil System Inputs Questions

Practise IB ESS HL 005.001.004 by applying soil system inputs concepts to environmental systems questions.

Syllabus
First assessment 2026
Course
ESS HL
Level
HL

Exam points

  • Identify soil-system inputs from dead organic matter, weathering, deposition and precipitation carrying dissolved minerals, and managed inputs such as compost, fertilizer or irrigation.
  • For mineral storage in the A horizon, identify mineral inputs such as mineral flow from another horizon, nitrogen fixation, inorganic fertilizer or capillary flow; distinguish these from water alone or organic amendments when the question asks specifically about mineral input.

IB ESS HL 5.1.4 Soil System Inputs Questions question 1

[Maximum number: 1]

Soil quality is important for global food production systems.

Horizons in a typical soil profile

Figure:Horizons in a typical soil profile

Identify one other input to the mineral storage in the "A" horizon.

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