Because Russia’s land mass is so large it is hard to built a good economy because of the size everything is from each other
In the late Mesozoic era, the region was affected by a series of orogenies that deformed western North America and caused a great deal of uplift. Eruptions from volcanic mountain ranges to the west buried vast regions beneath ashy debris. <span />
Answer:
They form underground.
Explanation:
Extrusive rock refers to the mode of igneous volcanic rock formation in which hot magma from inside the Earth flows out onto the surface as lava or explodes violently into the atmosphere to fall back as pyroclastics or tuff.
