Correct option is C
Explanation-
The Earth's atmosphere has several layers, with the troposphere being the lowest and the stratosphere just above it. Gas concentrations vary between these layers.
Ozone in the Atmosphere:
Ozone (O₃) is a gas formed from oxygen molecules through the action of ultraviolet (UV) light. It is most abundant in the stratosphere, forming the ozone layer. This layer is crucial because it absorbs harmful UV-B and UV-C radiation and protects life on Earth. The ozone layer is located at an altitude of about 15 to 35 km in the stratosphere.
Incorrect options-
Option a - Nitrogen - Nitrogen makes up ~78% of air in all layers, but not higher in stratosphere.
Option b - Oxygen - Present in both layers, but higher in troposphere.
Option d - Carbon Dioxide - Produced mainly at Earth's surface; not more concentrated in the stratosphere.
Final Answer: Option c - Ozone
