Chairs = common noun; Roll-O-Rocker = proper noun. Harriet threw the stale cucumber sandwich in the trash can and fantasized about a Big Mac dripping with special sauce. Sandwich = common noun; Big Mac = proper noun. Because we like an attentive waiter, we always ask for Simon when we eat at Mama Rizzoli's Pizzeria.
Answer: Reef Sand is live sand when it is on the bottom of the ocean floor, it is here where the reef sand is alive. When the Reef Sand has been out of the seawater for a period of time and exposed to the airborne elements it is considered to be dead sand. (lacking nitrifying bacteria).
sand. 1. Small, often rounded grains or particles of disintegrated rock, larger than particles of silt. Although sand often consists of quartz, it can consist of any other mineral or rock fragment as well.Coral sand, for example, consists of limestone fragments. 2.. sand-a loose material consisting of grains of rock or coral. beach-an area of sand sloping down to the water of a sea or lake. quicksand-a pit filled with loose wet sand into which objects are sucked down.