Question

Depletion of ozone layer is caused mainly by ___________.

Answer 1

Ozone layer:

1. The ozone layer is a part of Earth's Stratosphere present between $20-26$km above sea level.
2. It mostly contains a large number of ozone molecules$\left({\mathrm{O}}_3\right)$ along with other gases in the Stratosphere.
3. The ozone layer absorbs most of the harmful ultraviolet rays coming from the sun and prevents them from reaching the Earth.
4. The gases such as${\mathrm{CH}}_4$, $\mathrm{CFCs}$ and ${\mathrm{N}}_2\mathrm{O}$ escapes into the Stratosphere and cause damage to the ozone layer.
5. $\mathrm{CFCs}$ are the major cause of the depletion and destruction of the ozone layer.

Final Answer: Depletion of the ozone layer is caused mainly by CFCs.