World Geography
The major geological events of the Palaeozoic era include

Appalachians and Central European mountains come up
None of these
both (a) and (b)
Caledonian mountain rise, life comes ashore

ANSWER DOWNLOAD EXAMIANS APP

World Geography
The modern theory of plate tectonics states

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

ANSWER DOWNLOAD EXAMIANS APP