Ice-Albedo Feedback
Positive feedback loop where ice melting reduces surface reflectivity, causing increased warming and further melting.
Real World
Arctic sea ice extent hit a record low in September 2012, exposing dark ocean water that absorbed up to 90% of incoming solar radiation compared to ice reflecting 80%, accelerating regional warming.
Exam Focus
Draw a clearly labelled feedback loop diagram showing each step — examiners award marks for each correctly linked stage.
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