World Geography
The modern theory of plate tectonics states

that the oceanic crust is destroyed at areas where this crust type becomes subducted under the light
the convention currents within the earth's mantle cause the creation of new oceanic crust at the mid
All of these
the creation of oceanic crust and the drifting of continents

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World Geography
The Harmattan is

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

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World Geography
What is the name given to describe the characteristic warmth of both the atmosphere and surfaces in cities compared to their surroundings?

Urban Heat Island
Out Growths
Urban Agglomeration
Smart City

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World Geography
The initial increase of magnetic field in magnetic storms is caused

when the shock wave, associated with the gusty solar wind, compresses the magnetosphere
None of these
when there is a large decrease in field intensity
when the gust wind itself engulfs the magnetosphere

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