When the ozone layer is formed, the life forms evolved. They were not possible earlier.
The ozone is found and formed in the atmosphere. It is formed in the stratosphere.
The upper layer of the atmosphere is formed by ozone layer. This is a layer of ozone gas.
who the fak knows
ionesphere
Tornadoes are formed in the troposphere
Ozone is formed by UV rays. They are rays from the sun.
See "In what layer of the atmosphere do you find the ozone layer?" in the "Related questions" section below.
Chlorine radicals are formed by CFC's. They deplete the ozone layer.
Chlorofluorocarbon (CFC) gases used in refrigeration
The ozone hole in formed in the stratosphere region of the atmosphere. It is because most of the ozone is present in that layer.
That would be the troposphere. It is the first atmospheric layer and is the closest to Earth. This is where clouds and weather are formed.
The ozone in atmosphere is formed by UV. The UV replenishes it and then depletes it.