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IB ESS HL 5.1.10 Soil and Biodiversity Questions

Practise IB ESS HL 005.001.010 by applying soil and biodiversity concepts to environmental systems questions.

Syllabus
First assessment 2026
Course
ESS HL
Level
HL

Exam points

  • interpret the decrease in microorganism biomass with increasing soil depth
  • explain why higher surface biomass can reflect greater organic-matter input, oxygen availability and decomposer activity
  • link microorganism distribution to nutrient cycling, soil biodiversity, decomposition and ecosystem productivity

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Study 5.1.10—Soil and biodiversity conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB ESS HL 5.1.10 Soil and Biodiversity Questions question 1

[Maximum number: 1]
Figure Types and causes of soil degradation globally

Figure Types and causes of soil degradation globally

Figure Soil profile and the relative proportions of each type of microorganism at increasing depth

Figure Soil profile and the relative proportions of each type of microorganism at increasing depth

State the trend of microorganism biomass with increasing depth in Figure.

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