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IB ESS SL 1.2.6 Earth as an Integrated System Question Bank

Connect the biosphere, hydrosphere, cryosphere, geosphere, atmosphere and anthroposphere as an integrated Earth system.

Syllabus
First assessment 2026
Course
ESS SL
Level
SL

Exam points

  • identify the system boundary and relevant components
  • classify each flow or exchange precisely
  • explain the system behaviour using energy, matter and interaction terms

1.2.6—Earth as integrated system question 1

[Maximum number: 4]

Outline the Gaia hypothesis as a model of the global ecosystem.

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