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).
While patch reefs have sometimes been described as a fourth coral reef type , such comparisons are clearly not appropriate. Rather, patch reefs are more properly considered regular micro-scale reef features of all three of the macro-scale reef types first described by Darwin-fringing reefs, atolls and barrier reefs.HAT IS A LAGOON? - A lagoon-as used in the context of coral reef typology-refers to a comparatively wide band of water that lies between the shore and the main area of reef development, and contains at least some deep portions.