IB ESS 2.3.16 (HL) Methane cycle
IB ESS 2.3.16 (HL) Methane cycle

IB Environmental Systems and Societies syllabusESS SL/HLFirst assessment 2026
Practise interpreting methane as a short-lived but potent greenhouse gas and linking oxidation to carbon cycle flows.
How this is tested
- compare methane's atmospheric residence time with its greenhouse warming effect
- explain how oxidation of methane to carbon dioxide links methane to the carbon cycle
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