Insimbi engenasici ityhubhu yesikwere luhlobo lwentsimbi ende enomngxuma. Ngenxa yokuba icandelo lisisikwere, libizwa ngokuba ityhubhu yesikwere. Inani elikhulu lemibhobho lisetyenziselwa ukuthutha ulwelo, njengeoli, igesi yendalo, amanzi, igesi, umphunga, njl.