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IB ESS SL 2.2.18 Non-biodegradable Pollutants Question Bank

Explain persistence, bioaccumulation and biomagnification of non-biodegradable pollutants.

Syllabus
First assessment 2026
Course
ESS SL
Level
SL

Exam points

  • identify the ecological process or energy relationship
  • apply the correct thermodynamic, productivity or trophic concept
  • justify the conclusion from evidence and system boundary

2.2.18—Non-biodegradable pollutants question 1

[Maximum number: 3]
Figure A sample food chain from a marine ecosystem to show the concentration of persistent organic pollutants (POPs) and the energy within each trophic level

Figure A sample food chain from a marine ecosystem to show the concentration of persistent organic pollutants (POPs) and the energy within each trophic level

Question (a)

(a)

State the relationship between POPs concentration and trophic level.

[ 1 ]

Question (b)

(b)

Explain the relationship between POPs concentration and trophic level.

[ 2 ]
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