What is the main gas responsible for the ozone layer?
A
Methane
B
Carbon dioxide
C
Ozone
D
Oxygen
Correct Answer: Option C — Ozone
Explanation:
The ozone layer, composed of ozone molecules (O3), absorbs most of the sun's harmful ultraviolet radiation, protecting life on Earth. It is located in the stratosphere, roughly 15 to 35 kilometers above the surface.