Which of the following absorbs ultraviolet radiation from the sun?

The maximum concentration of ozone in the atmosphere is measured in terms of:

Recognizing the deleterious effects of ozone depletion,an international treaty was signed at Montreal in $1987$ to control the emission of ozone-depleting substances,which is known as $.........$.

$CFCs$ are not recommended for use in refrigerators because they

Which layer of the atmosphere contains the ozone that is referred to as 'bad ozone'?

In coming years,skin-related disorders will be more common due to: