when the quantity of materials purchased is not equal to the quantity of material used, most companies base the calculation of the material quantity variance on the:

that would be b i just took the test : )

ammonium chloride & tallow

igneous rocks also form where plates converge. the subducting plate melts as it sinks into the crust of the earth, and the melt rises into the overriding plate forming volcanoes. metamorphic rocks are formed mainly in the lithosphere, wherever there is high pressure and high temperature. -woods