World Geography
Which among the following pairs is/are correctly matched?Horst – Depressed block of planetary crust bordered by parallel faultsOceanic trench  – Depressed block of planetary crust bordered by parallel faultsSelect the correct code from the options given below:

Neither 1 & 2
Only 1
Only 2
Both 1 & 2

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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
The periodic rise and fall of the sea level on the earth, gives rise to tides. This is related to

infrared rays from the sun
ultraviolet rays from the sun
the position of the moon with reference to the earth and the gravitational pull exerted mainly by the moon and partly by the sun
None of these

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