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Which of the gases in Earth’s atmosphere (stratosphere) is associated with intercepting much of the sun’s harmful ultraviolet radiation?

Explanation

There is a portion of stratosphere with higher concentration of ozone and prevents harmful ultraviolet light from coming to Earth.
Alternative explanation:  UV energy breaks the ${O^2}$ bond, allowing single oxygen atoms to reform as ${O^3}$.  Energy from lightning storms also breaks up ${O^2}$ to create ozone [having a bleach-like odor].

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