A RealAge answered. You can expect to pay anywhere from $10 to $40 for a tray-based teeth whitening kit purchased over the counter (OTC) from a pharmacy or other retail store. You can also purchase tray-based teeth whitening systems from dentists. These systems feature custom-fit tooth trays or mouthpieces, which is why they are significantly more expensive than OTC tray-based teeth whitening kits. Purchasing a tray-based teeth whitening system from your dentist may cost up to $500.
Planking (or the Lying Down Game) is an activity consisting of lying face downâsometimes in an unusual or incongruous location. Both hands must touch the sides of the body. Some players compete to find the most unusual and original location in which to play.lanking can include lying flat on a flat surface, or holding the body flat while it is supported in only some regions, with other parts of the body suspended.
plankton. n. 1. (Biology) the organisms inhabiting the surface layer of a sea or lake, consisting of small drifting plants and animals, such as diatoms.Compare nekton. [C19: via German from Greek planktos wandering, from plazesthai to roam].lankton is a primary food source for many animals, and consists of bacteria, protozoans, certain algae, cnidarians, tiny crustaceans such as copepods, and many other organisms. Microscopic aquatic organisms that float near the surface of water.