World Geography
The uppermost epoch of the Neogene period is

the Pleistocen epoch
the Oligocene epoch
the Pliocene epoch
the Miocene epoch

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

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

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