Environmentalhard · Past Paper
What is the 'Permafrost' carbon feedback loop?
APlants freezing and releasing oxygen
BMelting permafrost releasing stored methane and CO2, causing more warming
CIce reflecting sun and cooling Earth
DOceans absorbing carbon when they freeze
✓ Correct Answer: B — Melting permafrost releasing stored methane and CO2, causing more warming
As permafrost melts due to warming, trapped organic matter decomposes, releasing greenhouse gases that further accelerate warming.
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