World Geography
The modern theory of plate tectonics states

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
All of these
the creation of oceanic crust and the drifting of continents

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World Geography
What is the weight of actual amount of water vapour present in unit volume of air called?

Absolute Humidity
Relative Humidity
Specific Humidity
Condensation

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World Geography
Which among the following period in the demographic history of India is called the Period of Stable Population?

1921 to 1951
1981 to Present
1951 to 1981
1891 to 1921

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