The presence of O3 in atmosphere of earth:
Correct answer: B. Helps in checking the penetration of ultra violet rays to earth
- A. Has been responsible for increasing the average global temperature in recent
- B. Helps in checking the penetration of ultra violet rays to earth
- C. Hinders higher rate of photosynthesis
- D. Is advantageous since it supplies O2 for people travelling in jets
Explanation
Stratospheric ozone absorbs much of the Sun's harmful ultraviolet radiation before it reaches Earth's surface. Ozone near the ground is a pollutant, but the question refers to protective stratospheric ozone.
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