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Ozone layer acts as a shield against the ultra violet rays and protects the life on the earth. Ultra violet rays are emitted by the sun. These rays are intercepted by the ozone layer of the atmosphere before they reach the surface of the earth. Ozone layer absorbs harmful emissions from the sun and protects the life on the earth. Ozone layer is composed of ozone, a molecule made up of three oxygen atoms which are bonded together.
The ozone layer is a region in the Earthâs atmosphere that contains high concentrations of ozone. Ozone is three molecules of oxygen bonded together, and so it has the chemical symbol O 3. The ozone layer contains more than 91% of the ozone in the Earthâs atmosphere.Because it absorbs ultraviolet radiation from the Sun, the ozone layer is vital to the evolution and survival of life on Earth.zone is three molecules of oxygen bonded together, and so it has the chemical symbol O 3. The ozone layer contains more than 91% of the ozone in the Earthâs atmosphere. Because it absorbs ultraviolet radiation from the Sun, the ozone layer is vital to the evolution and survival of life on Earth.