Ozone is dangerous to human health only when it is found in the?

Ozone is dangerous to human health when it is found at ground level in the atmosphere, particularly in urban areas where it can accumulate due to vehicle emissions and industrial pollutants. Ground-level ozone can irritate the respiratory system, exacerbate Asthma, and lead to other health problems. In contrast, ozone in the stratosphere forms a protective layer that shields the Earth from harmful ultraviolet radiation. Thus, while stratospheric ozone is beneficial, ground-level ozone poses significant health risks.