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
Which among the following statements is correct about Mesa?

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

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