World Geography
The Penumbra is

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

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World Geography
Which among the following statements is correct about Mesa?

It is a narrow pass or gorge between mountains or hills
It is a secluded hollow
It is a small hill
It is an elevated area of land with a flat top and sides that are usually steep cliffs

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