A) Hinders higher rate of photosynthesis
B) Has been responsible for increasing the average global temperature in recent past
C) Helps in checking the ultra violet rays to earth
D) is advantageous since it supplies oxygen for people travelling in jets.
Correct Answer: C
Solution :[c] Stratospheric ozone (sometimes referred to as "good ozone") plays a beneficial role by absorbing most of the biologically damaging ultraviolet sunlight (called UV-B), allowing only a small amount to reach the Earth's surface. The absorption of ultraviolet radiation by ozone creates a source of heat, which actually forms the stratosphere itself (a region in which the temperature rises as one goes to higher altitudes). Ozone thus plays a key role in the temperature structure of the Earth's atmosphere.
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