Rangarira ndima iri pasi apa uye ipapo pindura mubvunzo gare gare mumutauro mumwe chetewo sechikamu:  Kupfuura: Maitiro ari mumhepo yokumusoro anopa kusvika ku90% yeformaldehyde yose iri mumhoteredzo. Formaldehyde chinhu chiri pakati nepakati pakuita oxidation (kana kupisa) kwemethane, pamwe nezvimwe zvinogadzirwa nekabhoni, semuenzaniso mumoto wemusango, utsi hwemotokari, uye utsi hwefodya. Apo inobudiswa mumhepo yakapoteredza pasi kupfurikidza nebasa rechiedza chezuva neoksijeni pamethane yomumhepo yakapoteredza pasi nemamwe mahydrocarbon, inova rutivi rwesmog. Formaldehyde yakaonekwawo muchadenga (ona pasi apa).  Mubvunzo: Chii chinoreva zvakafanana nokupisa?
oxidation (kudzvinyirira)