In the atmosphere. Hundreds of millions of years ago.
The ozone layer is a natural part of the Earth's atmosphere that formed over millions of years as oxygen molecules interacted with ultraviolet radiation from the sun. It acts as a protective shield, absorbing and filtering out much of the sun's harmful UV rays. The ozone layer was not "invented" but rather naturally evolved as a crucial component of our planet's atmosphere.
Dr Farman invented the hole. He said that there is an ozone hole.
Mankind invented CFC's. These CFC's are causing ozone depletion.
Ozone layer contains ozone in it. Therefore, it is named so.
ozone layer in Tagalog: ozone layer (no direct Tagalog translation)
Ozone layer is formed of ozone. It is a gas.
Earth has a layer of ozone. It is present as the ozone layer.
damage to ozone layer is called ozone depletion. It is thinning of ozone layer.
The layer of gases that surround the atmosphere is ozone. It is present as the ozone layer.
Ozone layer is the layer of ozone. Humans are altering it by CFC's.
The ozone layer is in the stratosphere. It is a pool of ozone molecules.
Earth and Venus have a protective ozone layer. These planets have ozone molecules in ozone layer.