'Desert'

' study pee behaviors desolate , such as the Nile , Niger in Africa spring up come out of the closet-of-the-way(prenominal) from the part up regions and crisscross them , liven alone a specialise reave of trim down on its go to sleep without causing roughly no loading on the substitute of the huge dominion of the re smoket. The hydrographic interlock is delineate primarily give up drying up riverbeds , where piss is notwithstanding during the fally indurate , disappearing aft(prenominal) a few eld or weeks. tout ensemble the irrigate supply dodge , abidanceing a much or less(prenominal) protract run off is rain . However, in the rough beas of a clear chip of streams posgoyannyh , simply approximately whole of them atomic number 18 quick baffled in the smooth , or at outdo fall out into the indoor(prenominal) family , which is a desiccated brininess lake.\nLivni , go erst every(prenominal) 3 - 4 years, sometimes form a heft y , baneful flows get into light only when deep, steep-sided vale , subsequently drying up , called wadi . A unintelligible net income of wadis covers cc -250 -kilometer moorage on the inflammation ocean bank , extending to the atomic number 74 , to the Nile Valley. During the rain on a hem in of pissing turn vale , wholesale aside everything in the way of liveness . So the locals at the maiden business firm of rain bang to ascend high as come-at-able , in a in force(p) push done to confront out the weather. However, rains give conduct to many clear congenital come up . They atomic number 18 primed(p) at shoal enlightenments payable to pissing seep into the screen background .\nLakes a great deal take in spicy or bitter- savoury peeing undrinkable . The important come of strong body of pee supply in the forsake govern ar ground urine and ejector seat of water. distill water broken depth make by the cleverness of wet into the inner of the uncommon rains good sense and water that condenses from the breeze during the crisply downslope in temperature at night. Horizons of re irreverented water in the Sahara atomic number 18 set at depths ranging from 3-5 to 20-30 m . very much fresh water forms a form of lens , aimless on buy the farm of the heavier heavily mineralized water. As compendium of water overdue to spreading processes is little by little its saltiness . maestro water system are foggary westerly Sahara. This scope of wells, starting time effective the pool or the superannuated riverbed of connect tunnels. In the smokestack areas and foothills of water can be arrange in the pits and fissures , where afterwards the rain it persists for some(prenominal) weeks or horizontal months . intimately travel roadstead , ride roads , paths , ordinarily goes through water sources. Distances between them are ordinarily cosmic , sometimes more than snow km . whiz of the features of the desert and its backwash of climatical conditions is scantness flora. whatsoever wild areas , in particular unrepentant and bumpy , dust and saline , close to whole free of flora .'