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GCSE Geography · key term
The warming of Earth's surface and lower atmosphere caused by naturally occurring greenhouse gases absorbing and re-emitting outgoing infrared radiation.
Used by OCR
Specification 2.1b · Paper 1, Paper 3
Revise: Natural and Human CausesThis is the natural greenhouse effect. Without it, Earth's average surface temperature would be about −18°C, making conditions much less suitable for life.
Use ‘enhanced greenhouse effect’ when explaining human-caused warming. The natural greenhouse effect is essential for life.
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