Echiche Nkwakọ Ngwaahịa N’ụwa nke oge a, ndị mmadụ na-ekpughepụkarị maka ihe ike nke ihe ọjọọ na-abụghị. Nkoloji ojoo, ura nke ndu n’ime megalopolis ma obu nsogbu n’eduba na abawanye na aru. Iji kwado ma melite ọnọdụ arụ ọrụ nke anụ ahụ, a na-eji mgbakwunye eme ihe. Isi okwu nke oru ngo a abụrụla esereese nke imezi ọdịmma mmadụ na iji ọgwụ. Ọzọkwa, isi ihe eserese na -emeghachi ọdịdị nke mkpụrụedemede F - mkpụrụedemede izizi n’aha ika.