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IB ESS SL 8.3.2 Primary pollutant sources Question Bank

Practise IB ESS SL/HL 8.3.2 by applying primary pollutant sources concepts to exam-style environmental systems questions.

Syllabus
First assessment 2026
Course
ESS SL
Level
SL

Exam points

  • identify the relevant environmental system, process or evidence
  • apply the correct ESS concept and explain the causal relationship
  • evaluate the outcome using ecological, social or management evidence

8.3.2—Primary pollutant sources question 1

[Maximum number: 1]
Figure Average hourly variation in ozone on wet and dry days in Guarujá, Brazil

Figure Average hourly variation in ozone on wet and dry days in Guarujá, Brazil

Figure Average hourly variation in NOx on wet and dry days in Guarujá, Brazil

Figure Average hourly variation in NOx on wet and dry days in Guarujá, Brazil

Figure Average hourly variation in SO2 on wet and dry days in Guarujá, Brazil

Figure Average hourly variation in SO2 on wet and dry days in Guarujá, Brazil

Outline one possible source of the pollutant shown in Figure.

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