 <translate> Kwararrun ƙwayoyin cuta suna da kashin baya. Saboda dabbobi masu rarrafe dabbobi ne masu kashin baya, su ne chordates. Tsuntsaye suna da kashin baya. Amsar ƙarshe: (E). <ibo> Ndị na-agba okirikiri nwere ọkpụkpụ azụ. Ebe ọ bụ na anụ ndị na-akpụ akpụ bụ ndị nwere akwara, ha bụ ndị chordates. Anụ ndị na-akpụ akpụ nwere ọkpụkpụ azụ. Azịza ya bụ: (E). 