Why could we describe magma as a slushy mixture

Because different minerals have different melting points, not all parts of a rock melt at the same time. This explains why magma is often a slushy mix of crystals and molten rock. The process whereby some minerals melt at low temperatures while other minerals remain solid is called partial melting.

Explanation:

the values of the selma marchers was to bring   their ability to vote into law. mlk was not hat march, which was protesting toward lbj

answer; people have no objective standard by which to judge themselves;