Ozone can be destroyed by which of the following?
i. Hydroxyl radicals $\left(OH\right)$    ii. Nitric oxide radical $\left(NO\right)$    iii. Chlorine radical $\left(Cl\right)$ 

Ozone can be depleted by;
i. Hydroxyl radicals $\left(OH\right)$    ii. Nitric oxide radical $\left(NO\right)$    iii. Chlorine radical $\left(Cl\right)$ 
These radicals in presence of sunlight decompose the O₃ molecules, thereby reducing ozone in the stratosphere.