A:
Helps In Photosynthesis
B:
Prevents Earth’s Radiation From Escaping
C:
Filters Ultra-Violet Rays Selectively
D:
Blocks Ultra-Violet Rays Completely
Explanation
The ozone layer is important because it filters ultra-violet (UV) rays selectively.
The ozone layer is a thin layer of gas in the Earth's stratosphere that contains a high concentration of ozone (O3) molecules. The ozone layer plays a crucial role in protecting life on Earth by absorbing most of the Sun's harmful UV radiation before it reaches the surface. UV radiation can cause a range of health problems, including skin cancer, cataracts, and immune system suppression.
The ozone layer works by selectively filtering out UV radiation while allowing visible light and other forms of radiation to pass through. This filtering process occurs because ozone molecules are highly reactive and can absorb UV radiation, converting it into harmless heat energy. The ozone layer thus acts as a shield against harmful UV radiation, allowing life on Earth to thrive.
It's important to note that the ozone layer is not perfect and can be damaged by human-made chemicals such as chlorofluorocarbons (CFCs), which were once widely used in refrigeration, air conditioning, and aerosol sprays. The depletion of the ozone layer can have serious consequences for human health and the environment, which is why the production and use of CFCs have been phased out under the Montreal Protocol.
