1 Granite is a very hard stone and 100 percent natural. Itâs mined from quarries all around the world, cut down to a manageable size, and then polished to a fine finish.  Quartz is slightly different in that it is not 100 percent natural.
What does DC mean? District of Columbia, D.C., DC (noun) the district occupied entirely by the city of Washington; chosen by George Washington as the site of the capital of the United States and created out of land ceded by Maryland and Virginia
ALTERNATING CURRENT. After reading this section you will be able to do the following: Define what AC stands for and what it means. Explain how AC is created and delivered to different places. Discuss the differences between AC and DC. AC is short for alternating current.