IB ESS HL 4.4.13 Indicator Species Question Bank
Use indicator species to infer pollution or ecosystem condition.
- Syllabus
- First assessment 2026
- Course
- ESS HL
- Level
- HL
Exam points
- identify the aquatic-system process or pollution indicator
- apply the relevant conservation, quality or management model
- evaluate ecological and human trade-offs from evidence
4.4.13 (HL)—Indicator species question 1
[Maximum number: 1]
With reference to Figures: Figure: Probability of lead exposure for condors by diet and Figure: Lead and non-lead bullets after impact:
State the term for a species that is used to measure pollution levels.
biotic index/indicator species;
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