Question

what is UV rays?username is meet codé
how is earth protected to avoid uv rays​

Answer 1

uv rarys means ultraviolet rays.

Ozone in the stratosphere protects life on Earth from harmful ultraviolet (UV) radiation and is therefore often called 'good' ozone. This in contrast to ozone in the troposphere, the lowest layer of the atmosphere, where it is an air pollutant and can be harmful to humans, animals and vegetation.