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The peak concentration ozone above surfa...

The peak concentration ozone above surface of Earth is at:

A

10 km

B

15 km

C

20 km

D

25 km

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The correct Answer is:
To determine the peak concentration of ozone above the surface of the Earth, we can follow these steps: ### Step-by-Step Solution: 1. **Understand Ozone Composition**: Ozone (O₃) is a gas made up of three oxygen atoms. It occurs naturally in the atmosphere, primarily in the stratosphere. 2. **Identify the Location of Ozone**: The majority of the ozone (about 90%) is found in the stratosphere, which is the second layer of the Earth's atmosphere, located above the troposphere. 3. **Know the Stratosphere Altitude**: The stratosphere extends from approximately 10 kilometers to 50 kilometers above the Earth's surface. 4. **Recognize Ozone's Function**: Ozone plays a crucial role in absorbing harmful ultraviolet (UV) rays from the sun, thus protecting life on Earth. 5. **Determine Peak Concentration**: The peak concentration of ozone occurs at an altitude of roughly 32 kilometers above the Earth's surface. 6. **Evaluate the Options**: Given the options: - 10 km - 15 km - 20 km - 25 km The correct answer should be the option closest to 32 km. 7. **Select the Correct Option**: Since 32 km is not listed, the nearest option is 25 km. ### Final Answer: The peak concentration of ozone above the surface of the Earth is at approximately **25 kilometers**. ---
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