IB ESS SL 2.3.5 Carbon Sequestration Questions
Explain how ecosystems and carbon-capture processes remove atmospheric CO₂ and store it in biomass or geological deposits.
- Syllabus
- First assessment 2026
- Course
- ESS SL
- Level
- SL
Exam points
- explain how trees and other producers remove atmospheric CO₂ through photosynthesis and store it in biomass
- compare carbon-storage or sequestration effectiveness between named ecosystems using data, units and area-based values
- explain how captured atmospheric carbon can be stored underground or in geological deposits, including the consequence of later fossil-fuel combustion
- trace how a named food-web change can alter producer biomass, photosynthesis and atmospheric carbon uptake
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IB ESS SL 2.3.5 Carbon Sequestration Questions question 1
Figure A simplified food web in a kelp forest ecosystem
Figure Kelp forest ecosystems with and without the presence of sea otters
The arrows indicate the flow of carbon between the atmosphere and the carbon stored in kelp.
Outline how the protection of sea otters could help mitigate climate change.
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