Yes, it is very beneficial. There is nothing denying that.
Ozone is very beneficial for earth. Ozone layer blocks around 97% of the total radiation received by the earth. It acts as a blanket and keeps the atmosphere cool. It is responsible for the survival of life on earth.
There was an ozone atmosphere on primitive Earth, but not an ozone layer which was formed further on. The primitive atmosphere on the surface of the Earth mostly composed by ozone was pushed upwards by the oxygen formed by dead organisms. That primitive ozone atmosphere on the surface of the Earth protected the forming microorganisms from the UV radiation. JamesWest09
The ozone is found and formed in the atmosphere. It is formed in the stratosphere.
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 third layer of Earth's atmosphere is called the Mesosphere.
The mesosphere is the coldest layer of the earth's atmosphere.
The outermost layer of the Earth's Atmosphere is the thermosphere.
The sun
The upper layer of the atmosphere is formed by ozone layer. This is a layer of ozone gas.
The layer of gas surrounding earth is the atmosphere.
Troposphere is the lowest layer of the atmosphere, which is adjacent to the earth's surface.
The second layer of the Earth's atmosphere is called Stratosphere.