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
the creation of oceanic crust and the drifting of continents
that the oceanic crust is destroyed at areas where this crust type becomes subducted under the light
All of these

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World Geography
Which among the following statements is/are correct about Dust particles in the Earth’s atmosphere?Higher concentration of dust particles is found in equatorial and polar regionsThey are generally found in the lower layers of the atmosphereSelect the correct code from the options given below:

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

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