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| Q. |
Ultraviolet radiation in the stratosphere is absorbed by – |
| A. | SO2 |
| B. | Ozone |
| C. | Oxygen |
| D. | Argon |
| Answer» B. Ozone | |
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Explanation: The ozone layer of Earth's stratosphere absorbs most of the Sun's ultraviolet radiation. It absorbs 97 to 99 percent of the Sun's medium-frequency ultravi-olet light (from about 200 nm to 315 nm wavelength), which otherwise would potentially damage exposed life forms on the earth. |
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