Which of the following pairs of substances would best be separated using a centrifuge, and why?
cream and milk, because of their difference in density
cream and milk, because of their difference in boiling point
salt and water because of their difference in magnetism
salt and water, because of their difference in solubility

Rocks, as they are compressed, begin forming mountains above the earth's surface when two continental plates converge. the continental crust increases in depth as the mountains grow above. the himalayan mountains formed at a convergent plate boundary in this manner. the rocks are smashed together causing them to due to the intense heat and pressure from the colliding plates and eventually forming rock. a) melt; igneous b) layer; sedimentary c) recrystallize; metamorphic d) melt into the earth's interior; metamorphic