1. The mkpụrụ ike na elongation nke ọla kọpa efere bụ inversely hà, ike nke esichara ọla kọpa efere na-abawanye nnọọ elu, ma nwere ike belata site okpomọkụ ọgwụgwọ.
2. A naghị ejedebe efere ọla kọpa site na nhazi nhazi, ọ naghị emebi emebi na obere okpomọkụ, enwere ike ịgbanye ya site na ikuku oxygen na ụzọ ịgbado ọkụ ndị ọzọ na-ekpo ọkụ mgbe ebe mgbaze dị elu.
3. N'etiti ihe niile ígwè maka ihe owuwu, ọla kọpa nwere ihe elongation kachasị mma ma nwee nnukwu uru n'ịkwado na nhazi ụkpụrụ ụlọ.
4. Ọla kọpa efere nwere magburu onwe nhazi mgbanwe na ike, adabara dị iche iche usoro na usoro dị ka flat kpochidoro usoro, guzo ihu snapping usoro, wdg.
● Obere ọkụ na-ewuli elu
● Imecha elu ka mma
● Ogologo ndụ ngwá ọrụ
● Emelitere oghere miri emi
● Ike weld nke ọma
●Kwesịrị ekwesị maka cores, cavities, na ntinye
