Which of the following statements is true regarding the earth's atmosphere?

It gets denser with an increase in the altitude

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It gets thinner with an increase in the altitude

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It remains the same.

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It contains no solid particles.

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Solution

The correct option is B It gets thinner with an increase in the altitude
The density of air decreases with an increase in altitude. At higher altitudes, there is less air pushing down from above, and gravity is weaker farther from Earth's centre. So at higher altitudes, air molecules can spread out more, and air density decreases

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