Ngwa

Site na iji ihe mgbanwe mbufe akpaka, sistemụ nchekwa nwere ike ijide n'aka na n'ọnọdụ mberede, dịka ọkụ, ọdịda ike ma ọ bụ ọdịda ike, sistemụ ahụ nwere ike ịnọgide na-arụ ọrụ ma nye nchekwa na njikwa nchekwa dị mkpa. Nke a na-eme ka ntụkwasị obi na ịdị irè nke sistemụ nchekwa dịkwuo mma, na-enye nchekwa ka mma maka nchekwa na ihe onwunwe ndị mmadụ.