<prompt> tafadhali geuza maudhui haya ya swahili kwenda kwa kiingereza.vitengo vya safu ya uharibifu ni ya mabadiliko, ikiwa mabadiliko yana kubwa zaidi ya 10 kwa kipindi hicho, yatachukuliwa kama kuboresha au uharibifu kulingana na ishara ya mabadiliko.  <response>: the units of the degradation layer are change, if changes are larger than 10 for the period, they will be considered as improvement or degradation depending on the sign of the change. 