How are igneous rocks formed?
a. glaciers melt.
b. hail falls and melts.
c. lava or magma cools and then crystallizes.
d. lava or magma heats up and crystallizes

Why was frederick douglass encouraged by the dred scott decision?

What does it mean to say that "service sector" jobs are predominant in europe's mixed economies today? a. that jobs where people work in factories predominate b. that jobs where people do something for others predominate c. that jobs where people work the land predominate d. that jobs in government predominate

Which graph shows the temporary relationship between the aggregate price level and the aggregate quantity supplied? a. long-run aggregate supply curve b. aggregate demand curve c. short-run aggregate supply curve d. point of equilibrium