Question

how does stratospheric ozone differ from tropospheric ozone? tropospheric ozone is natural, while stratospheric ozone is man - made. stratospheric ozone protects life by blocking uv rays, while tropospheric ozone is a pollutant. tropospheric ozone is essential for life, while stratospheric ozone is harmful. stratospheric ozone is composed of different elements than tropospheric ozone.

Explanation:

Stratospheric ozone forms a protective layer that absorbs harmful ultraviolet (UV) radiation from the sun, safeguarding life on Earth. Tropospheric ozone is a secondary pollutant formed through chemical reactions involving nitrogen - oxides and volatile organic compounds in the presence of sunlight, and can be harmful to human health and plants. Both are made of $O_3$ molecules.

Answer:

Stratospheric ozone protects life by blocking UV rays, while tropospheric ozone is a pollutant.