Carbon sequestration approaches reduce atmospheric carbon dioxide by increasing biological carbon uptake and long-term storage in biomass or soils over time.
Coverage 2025–2025 · Updated 16 Jul 2026
Carbon sequestration lowers atmospheric CO2 when carbon is transferred into a store and remains there for a meaningful period.
Forests, soils, wetlands, oceans or engineered stores take up carbon, but fire, decay, disturbance, leakage and saturation can return it. Net effect depends on additionality and permanence.
Check source, sink, duration, leakage and what would happen without the project.; separate driver, mechanism, response and timescale
Restoring a wetland can bury carbon in waterlogged soils, but drainage later can reverse the storage and release CO2. This gives a concrete prediction from the stated climate condition.
Sequestration complements emissions cuts; temporary uptake does not cancel ongoing fossil emissions one-for-one. Interpret the result within the stated evidence and scenario limits.
This objective is assessed through multiple choice, structured response, commonly using Explain.
Explain
Build the answer around this relationship: Photosynthesis removes carbon dioxide from the atmosphere and stores carbon in organic matter.
Representative question
Which action will decrease carbon sequestration?
Afforestation
Primary production
Deforestation
Rewetting peatlands
Core D4.3 is secure when every climate impact is explained as a chain: human greenhouse-gas sources or feedbacks change climate conditions, which alter habitats, oceans, carbon stores, or species distributions. Carbon sequestration is the mitigation chain that stores atmospheric CO2.
Core climate-change transfer answers should not list endangered examples. They should identify the climate driver, explain the physical or chemical mechanism, then state the biological consequence. Use this for greenhouse gases, feedbacks, boreal forests, ice-dependent species, upwelling, range shifts, reefs, and carbon sequestration.
