The depletion of the ozone layer in the stratosphere is responsible for which of the following?

What is responsible for soil pollution?

What are $X$ and $Y$ in the following reaction?
$CF_2Cl_2 \stackrel{UV}{\longrightarrow} X + Y$

The delicate balance of $CO_2$ and $O_2$ is $NOT$ disturbed by:

Which free radical is responsible for the depletion of the ozone layer?

Given below are two statements:
Statement $I:$ Classical smog occurs in cool humid climate. It is a reducing mixture of smoke,fog and sulphur dioxide.
Statement $II:$ Photochemical smog has components,ozone,nitric oxide,acrolein,formaldehyde,$PAN$ etc.
In the light of above statements,choose the most appropriate answer from the options given below: