World Geography
The hazards of radiation belts include

damage of solar cells of spacecraft
deterioration of electronic circuits
adverse effect on living organisms
All of these

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World Geography
The modern theory of plate tectonics states

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

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