Dhirta daaweynta bullaacadda bullaacadaha (spps) waa tas-hiilaad casri ah oo loogu talagalay in lagu daweeyo biyaha wasakhda ah si hufan oo waara, hubinta in biyuhu daaweyn ay ku kulmaan heerarka jawiga adag ee siidaynta ama dib loo isticmaalo. Dhirtani waxay isku dari karaan horumar sare, geesi jireed, iyo mid kiimiko ah wi