The diving pool at the London Olympics has to be a minimum depth of 4.5 meters, but the preferred depth is 5 meters (16 feet 4 inches).8 people found this useful.he diving pool at the London Olympics has to be a minimum depth of 4.5 meters, but the preferred depth is 5 meters (16 feet 4 inches). 8 people found this useful.
Positive feedback mechanism. A process whereby an initial change in an atmospheric process will tend to either reinforce the process (positive feedback) or weaken the process (negative feedback). See Feedback mechanism.
The basis of photosynthesis in plants is the oxidation-reduction process, in which four electrons and protons are raised from the level of the oxidation-reduction potential of water (+ 0.8 volt) to the level corresponding to the reduction of CO 2 with the formation of carbohydrates (â0.4 volt).