Order the steps that lead to assimilation. Items (4 items) (Drag and drop into the appropriate area) Incorporated crustal blocks within the magma melt, mixing with the magma. Blocks of the surrounding silica-rich crust break off and become incorporated into the magma. A magma forms and begins to migrate through the crust. The amount of silica in the magma increases and the magma composition changes accordingly. Items in order First 1 2 3 4 Last