Vafambi vezvikepe, vachienda kunzvimbo iri kure, vachitakura uye kuchengeta mvura mune zvesirivha. Iyi simbi yakashandiswa kuita ndiro nemishonga. Ichokwadi chinozivikanwa kuti vakuru vakuru vemushandirapamwe weAlexandro Mukuru, kusiyana nemautowo zvake, anenge asina kukuvadza, kunyange zvazvo vakanga vari mumamiriro akafanana. Uye shure kwemazana maviri emakore makore aya akawanikwa, zvinoshanduka kuti vakuru vakuru vaAlexandro Mukuru vakanwa kubva mumidziyo yesirivha, uye varwi vese vanonwa kubva muatini.
VaIndia vekare vaizivawo kuti zvinhu zvinokosha zvesirivha uye vaizvishandisa, izvo, nemari yakatsvuka inopisa yakavharirwa. Uye mukana wekukundikana kwegadziro remimba, kunyange zviduku zvesirivha mashizha mukati mukati zvakatorwa. Mishonga yekare yekare yaiziva kuti sirivha inobudirira inobvisa pathogenic flora uye haina kukuvadza mucosa yevanhu.
Yakagara ichizivikanwa kuti mvura yeRwizi Ganges inoratidzwa nehuwandu hwekuporesa. Vafambi vakawanda vanouya kurwizi urwu kuti vabvise matambudziko akasiyana eganda, kusanganisira maronda asina kurapa. Haisi yekuti chinhu icho rwizi rakatora zita rokuti "rwizi rutsvene". Mvura iri pasi yeRwizi urwu inoshambidzwa nehomwe huru yemari yesirivha.
MuIjipiti yekare, mahwendefa esirivha aishandiswa kurapa maronda.
Sezvinoratidzwa nekuongororwa kwakawanda kwevasayendisiti, sirivha inokwanisa kurarama nemanomwe mazana emarudzi emaabhakitiriya, mazhinji fungi nemavirusi. Kuenzanisa, chero mishonga inorwisa mabhakitiriya inogona kurarama nemarudzi manomwe chete emabhakitiriya.
Sirivha inogona kuita zvinoparadza purogiramu ye enzyme ye microorganism, iyo inomisa kukura kwayo uye kubereka, uye haigoni kukonzera kusvuta uye kuwedzera mumuviri.
Zvigadzirwa zvesirivha kune dzimwe nyika zvakagara zvichishandiswa pakuvakwa kwemigwagwa yemvura. Mukuwedzera, sirivha inoshandiswa kupirisa marangi. Zvinosuruvarisa, munyika dzedu chiyero chakadai chekusvibiswa kwemvura hachiitwe, saka shandisa sirivha kumba. Asi zvinofanira kuonekwa kuti kudarika kwechirivheri kunogona kukonzera kuonekwa kwemakemikari, izvo zvinogona kuratidza sechiedza cheganda.