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 most thoroughlystudied example ofdirect positive feedback is that ofgranivores, which can enhance seedling recruitment bydispersing or caching seeds (e.g. Brown et al., 1979;Longland et al., 2001). Another important example isthe relationship between soil bacteria and their nema-tode predators.