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Kendall West Rudy Crew (2004-2008), Fire is an important element in the natural maintenance of the Everglades the majority of fires are caused by lightning strikes from thunderstorms during the wet season Their effects are largely superficial and serve to foster specific plant growth: sawgrass will burn above water but the roots are preserved underneath Fire in the sawgrass marshes serves to keep out larger bushes and trees and releases nutrients from decaying plant matter more efficiently than decomposition Whereas in the wet season dead plant matter and the tips of grasses and trees are burned in the dry season the fire may be fed by organic peat and burn deeply destroying root systems Fires are confined by existing water and rainfall it takes approximately 225 years for one foot (.30 m) of peat to develop but in some locations the peat is less dense than it should be for the 5,000 years of the Everglades' existence Scientists indicate fire as the cause; it is also cited as the reason for the black color of Everglades muck Layers of charcoal have been detected in the peat in portions of the Everglades that indicate the region endured severe fires for years at a time although this trend seems to have abated since the last occurrence in 940 BCE. .

! Cycling and walking The International Hydrographic Organization (IHO) defined the limits of the oceans and seas in 1953 but some of these definitions have been revised since then and some are not used by various authorities institutions and countries see for example the CIA World Factbook Correspondingly the extent and number of oceans and seas varies, 8 Notes Earth Sciences 118 Although this grid is easy to understand once one is oriented to it it is not universal in the entire county Hialeah uses its own grid system which is entirely different in its orientation Coral Gables and Miami Lakes use named streets almost exclusively and various smaller municipalities such as Florida City and Homestead use their own grid system along with the Miami-Dade grid system adding to the confusion in the beach cities and parks of Miami Beach Surfside Bal Harbour Sunny Isles and Golden Beach the streets are coordinated with the main grid; however their avenues are named.