World Geography
Who put forward the Gaseous Hypothesis theory of origin of earth?

Chamberlin
James Jeans
Kant
Laplace

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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
All of these
tertiary wind that carry great quantities of fine dust from the Sahara

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World Geography
The Penumbra is

both (a) and (b)
the outer portion of the moon's shadow
formed by the tangent that intersects between the sun and the moon
None of these

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