Dzokorora ndima iri pasi apa uye wozopindura mubvunzo unotevera mumutauro mumwe chete sezvinoita ndima yacho: Passage: Kuwanda kwemotokari uye kuwanda kwemigwagwa munzvimbo huru dzemadhorobha zvinoramba zvichikonzera matambudziko akakomba ezvemamiriro ekunze nehutano, kunyangwe hazvo mwero wesmog wakadzikira zvakanyanya kubva kuma1970 nema1980, uye kuvapo kwesmog kuri kuramba kuchiwedzera uye mwero wesulphur dioxide uri kudzikira. Mubvunzo: Ndechipi chikonzero chikuru chezvinhu zvemamiriro ekunze nehutano muchiitiko ichi?
Motokari dzakawanda uye kuwanda kwemotokari