The chief consumer (sink) for C.l and C.lO which cause ozone deplection is
CH2
In summer season NO2 and CH4 react with C.l and C.lO atoms forming chlorine sinks and preventing much ozone depletion.
C.lO + NO2 → C.lONO2
C.l + CH4 → .CH3 + HCl
C.l + O3 → Cl.O + O2(g) this reaction is the cause for