<prompt> Translate the following text to EnglishMto huo ulikamilika mwaka wa 1972 na umefikia makusudi yote mawili, lakini sasa uzazi wa mashamba ya Misri unashuka kwa sababu ya kukatwa na tabaka la kila mwaka la virutubisho vipya vilivyoletwa na mafuriko.  <response>: Completed in 1972 it has achieved both, but the fertility of Egyptian farming land is now falling as it is cut off from the yearly layer of fresh nutrients brought by the flood. 