Melanin
Ultra violet radiation or UV rays are harmful. Ozone protects us from it.
chlorophyll
Ultra-Violet (UV) Rays
Ultra Violet (UV) rays.
The ozone layer protects us. It protects from UV rays of sun.
Yes. Sunburn is a simply change in pigment caused by ultra violet rays from the sun. It will have no affect on a sonogram.
Because it protects us from Ultra Violet rays which is harmful to our skin.
ultra violet rays
ultra violet rays Actually, it's spelled ultraviolet rays.
Ultra Violet Rays
The Ozone Layer protects the Earth from UV (ultra violet) rays. Thanks to the Ozone Layer, the sunburns aren't severe.
The ozone layer protects us from harmful ultra violet(UV) beams