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IB ESS HL 8.3.1 Urban air pollutants Question Bank

Practise IB ESS SL/HL 8.3.1 by applying urban air pollutants concepts to exam-style environmental systems questions.

Syllabus
First assessment 2026
Course
ESS HL
Level
HL

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

8.3.1—Urban air pollutants question 1

[Maximum number: 2]
Atmospheric pollutants associated with photochemical smog

Figure:Atmospheric pollutants associated with photochemical smog

Question (a)

(a)

Identify one primary pollutant from the pollutants shown in the photochemical-smog pollutant chart shown above.

[ 1 ]

Question (b)

(b)

Outline why the pollutant named in Question 3 (a)(i) is referred to as a primary pollutant.

[ 1 ]
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