Rangarira ndima iri pasi apa uye ipapo upindure mubvunzo gare gare mumutauro mumwe chetewo sechikamu ichi: Ndima: Mukati memakore a1970, nzvero yakaratidza kuti chlorofluorocarbons (CFCs) dzakagadzirwa nomunhu dzinoderedza ndokutendeutsa mamorekuru eozone mumhepo. CFCs mamorekuru akatsiga akaumbwa nekabhoni, fluorine, uye chlorine ayo aishandiswa zvikuru muzvigadzirwa zvakadai semafiriji.
yakapa hurongwa hunodiwa hwekugadzira matanho ehurumende muchimiro cheMontreal Protocol