Correct option is A
Correct Matching:
A–4, B–3, C–2, D–1
Explanation:
→ The ozone layer is concentrated in the stratosphere, where it absorbs harmful ultraviolet radiation from the Sun.
→ Radio transmission is facilitated by the ionosphere, which reflects radio waves back to Earth due to the presence of ionised particles.
→ Weather phenomena such as clouds, rainfall, storms, and winds occur in the troposphere, the lowest atmospheric layer containing most water vapour.
→ The exosphere has extremely thin air and marks the outermost boundary of the atmosphere, gradually merging into outer space.
Information Booster:
→ Troposphere: Temperature decreases with height; all weather activity occurs here.
→ Stratosphere: Temperature increases with height due to ozone absorption of UV rays.
→ Ionosphere: Crucial for long-distance radio communication, especially at night.
→ Exosphere: Composed mainly of hydrogen and helium with very low density.
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