World Geography
Who among the following proposed the Tidal Hypothesis of the origin of Earth and Solar system?

Jeans-Jeffreys
Hoyle-Lyttleton
Chamberlin-Moulten
Kant-Laplace

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

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

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