The ozone layer in the upper atmosphere is depleted by $.........$.

Which of the following will cause skin-related diseases to become more common in the coming years?

$A$ decrease in the concentration of which gas in the atmosphere leads to an increase in the incidence of skin cancer?

Which of the following statement$(s)$ is/are correct?
$(i)$ The Montreal Protocol was signed in $1987$ and became effective in $1989$.
$(ii)$ 'Good' ozone is found in the troposphere.
$(iii)$ Ozone is formed by the action of $UV$ rays on molecular oxygen and degrades into molecular oxygen.
$(iv)$ $CFCs$ are responsible for the imbalance between the production and degradation of ozone.
$(v)$ $DNA$ and proteins of living organisms absorb $UV$ rays.

Which of the following is responsible for the depletion of the ozone layer?

Which of the following statements is not correct?