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Ultraviolet radiation is absorbed by...

Ultraviolet radiation is absorbed by

A

exosphere

B

ionosphere

C

ozonosphere

D

stratosphere

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The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding Ultraviolet Radiation**: Ultraviolet (UV) radiation is a type of electromagnetic radiation that comes from the sun. It has shorter wavelengths than visible light and can be harmful to living organisms. 2. **Role of the Ozone Layer**: The ozone layer, which is primarily composed of ozone (O3), plays a crucial role in absorbing UV radiation. It is located in the stratosphere, a layer of the Earth's atmosphere. 3. **Chemical Reaction**: When UV radiation strikes ozone (O3), it can cause the ozone molecules to break apart. This process can be represented by the following reaction: \[ 3 \text{O}_3 \xrightarrow{\text{UV}} 2 \text{O}_2 + \text{O} \] Here, ozone (O3) is converted into oxygen gas (O2) and a free oxygen atom (O). 4. **Location of Absorption**: The majority of UV radiation is absorbed in the stratosphere, where the concentration of ozone is highest. This absorption protects living organisms on Earth from harmful effects of UV radiation. 5. **Conclusion**: Therefore, ultraviolet radiation is primarily absorbed by the ozone layer (O3) in the stratosphere. **Final Answer**: Ultraviolet radiation is absorbed by the ozone layer (O3). ---
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