No mu bimenyetso bye ni uko abereka imirabyo mukagira ubwoba (bw’inkuba) n’icyizere (cyo kubona imvura), akanamanura amazi mu kirere, akayahesha isi ubuzima nyuma yo gupfa kwayo (gukakara). Mu by’ukuri muri ibyo harimo inyigisho ku bantu bafite ubwenge.