World Geography
The modern theory of plate tectonics states

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

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World Geography
The Penumbra is

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

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World Geography
Which among the following pairs of volcanoes is/are correctly matched?Mount St. Helens – United StatesMount Vesuvius – ItalyMount Krakatoa – IndonesiaSelect the correct code from the options given below:

Only 1 & 3
Only 2
Only 2 & 3
1, 2 & 3

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