Final answer:
Sudan's climate is characterized by extreme aridity and limited rainfall, as seen in the Sahara Desert.
Explanation:
Sudan is one of the driest countries in the world, as evidenced by its arid climate and limited precipitation levels. The Sahara Desert, which occupies a significant portion of Sudan, experiences extreme temperature variations and minimal rainfall. Geological research also indicates that the Sahara region was once greener and wetter thousands of years ago.
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