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Paper 4Theory (Extended)2 marks
The greenhouse effect is a natural process that warms the Earth’s surface.
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Understanding the Greenhouse Effect
The greenhouse effect occurs when the sun's energy reaches the Earth and some of it is reflected back to space while the rest is absorbed and re-radiated as infrared energy. Greenhouse gases trap some of this energy, keeping the Earth warm.
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State two greenhouse gases that contribute to the greenhouse effect.
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