World Geography
The part of the earth and thin layer of air above its surface, which support life on earth, are referred to as

stratosphere
ionosphere
mesosphere
biosphere

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World Geography
The Harmattan is

wind that blows during the dry season from December to February
cool, extremely dry wind that forms over the Sahara and blows westward or south-westward to the Af
tertiary wind that carry great quantities of fine dust from the Sahara
All of these

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