NEET levelSingle correct optionDifficulty 1 of 3ev057
The main role of the stratospheric ozone layer for life on Earth is that it
Aabsorbs the infrared radiation emitted by the Earth only
Babsorbs harmful ultraviolet radiation from the Sun
Csupplies oxygen for respiration
Dreflects visible light back into space
Answer: B
Ozone strongly absorbs the harmful short-wavelength UV radiation of sunlight, so only a small part reaches the ground. It is not a source of breathing oxygen, and its shielding role concerns UV, not visible light.