Nyika yemweya iripo chete munzanga yevanhu. Mhuka dzine nyika yemweya here? Ongororo dzinoratidza kuti mhuka dzepamusoro, senge primates uye cetaceans, dzine-yepamusoro-nhanho zviitiko, dzinogona kudzidza nekurangarira, uye kunyangwe dzine manzwiro erudo neruvengo, asi shure kwezvose, dzakadzikira kupfuura vanhu uye hadzina kukwana kuumba nyika yemweya yakakwana. Nyika yemweya ingori nzira yekuratidzira yepasirese uye chimiro chepamberi chekufamba kwehupenyu. Biological sainzi uye tekinoroji ndiyo theoretical system uye nzira tekinoroji yekudzidza nyika yehupenyu. Manzwisisiro anoita vanhu pamusoro pehupenyu hwenyika. Sezvo nyika yemweya iri iyo yemhando yepamusoro yekufamba kwehupenyu, zvese zvakawanikwa zvebudiriro yemweya zvichange zvichisanganisira pfungwa yehupenyu uye zvinoongororwa nesayenzi yebhayoloji. Naizvozvo, sainzi yehupenyu hwaro hwakakosha hwekuumbwa kwehunhu hwesainzi.