1 Its cost, on average, is $650, compared to $400 for take-home trays and under $100 for over-the-counter bleaching trays or whitening strips. 2  Results can be unpredictable, depending on factors such as age, heredity and the type of staining that is present.
Plankton (singular plankter) are a diverse group of organisms that live in the water column of large bodies of water and that cannot swim against a current. They provide a crucial source of food to many large aquatic organisms, such as fish and whales.
Plankton consists of any drifting organism, such as animals, plants or bacteria. They inhabit the pelagic zone of oceans, seas, or any other bodies of fresh water. See related link below.. These are microscopic organisms, similar to phytoplankton, who consume other plankton and digest waste.hey inhabit the pelagic zone of oceans, seas, or any other bodies of fresh water. See related link below.. These are microscopic organisms, similar to phytoplankton, who consume other plankton and digest waste.