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IB ESS HL 6.2.4 Enhanced greenhouse effect Question Bank

Practise IB ESS SL/HL 006.002.004 by applying enhanced greenhouse effect 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

6.2.4—Enhanced greenhouse effect question 1

[Maximum number: 1]
Seasonal changes in Arctic sea ice

Figure:Seasonal changes in Arctic sea ice

Arctic sea-ice extent

Figure:Arctic sea-ice extent

Arctic sea-ice cover from 1979 to 2012

Table:Arctic sea-ice cover from 1979 to 2012

the seasonal Arctic sea-ice diagram shown above: Changes in Arctic sea ice in a typical year.

org/arcticseaicenews/charctic-interactive-sea-ice-graph/. Accessed November 18, 2015.]

Identify one factor that may be causing long-term changes in sea ice cover.

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