Why is the atmosphere essential for life?

(N/A) The atmosphere is essential for life due to the following reasons:
$1$. It maintains an appropriate climate for the sustenance of life. It keeps the average temperature of the Earth steady during the day and throughout the year.
$2$. It prevents sudden increases in temperature during daylight hours.
$3$. The gases it contains are required for sustaining life on Earth. These gases include $Oxygen$,$Carbon$ $dioxide$,and $Nitrogen$.
$4$. $A$ thick layer of $Ozone$ in the stratosphere filters harmful $UV$ radiations from reaching the Earth. $UV$ rays produce harmful effects on all living organisms.