The rivers start from the mountains or hills.
The Sahara Desert blankets nearly all of Mauritania, Western Sahara, Algeria, Libya<span>, </span>Egypt<span> and </span>Niger<span>; the southern half of </span>Tunisia<span>; and the northern parts of </span>Mali<span>, Chad and Sudan.</span>
It is true because two blocks move horizontally in opposite directions along the fault line.<span>
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Ice was produced using radiation effect by setting out shallow terra cotta rays with just small amount of water. At night when the temperatures were cool while humidity is low the water used to freeze in the morning.the ice formed was collected and stored in caverns