Oasis igomba remvura mugwenga. Zvirimwa zvinokura zvakapoteredza gomba remvura, saka chigamba chegirinhi mugwenga rinopisa. Vanhu vanogonawo kugara muoasis. Kune maoasi muAfrica, Asia, America, neAustralia.
Mvura yacho inowanzobva muchitubu chiri muvhu. Mamwe maoasi enzizi. Rwizi rweNile, semuenzaniso, nderimwe renzizi oasis, kunyangwe iri hombe kana kureba. Oasis inogonawo kugadzirwa nevanhu vanodhonza mvura kubva pasi pemvura.
Kunonzi kurima oasis kana chimwe chinhu charimwa muoasis, semuriwo kana zviyo. Chinozivikanwa nokuda kwezvitsuwa ndiwo muti wemuchindwe. Kana chirimwa ichichida mvura yakawanda, ndipo panobva yaswedera pedyo nekwaunokura nacho.
Kare, maoasi aive akakosha pakufamba kwemakaravhani, kureva mapoka evanhu vaifamba pamwechete mugwenga. Panzvimbo yakatsvuka, waigona kutora mvura newe kana kuti kutengeserana. Dzaive dzakakosherawo vanhu vaisagara panzvimbo imwe chete asi vaidzungaira, kune vanotama.