Ozone is a tri oxygen molecule. It is formed in a natural process by the action of UV light on oxygen molecule.
CFC's are leading substance in ozone depletion. They decompose ozone.
CFC's are a major threat to ozone. They react with ozone to deplete it.
Ozone depleting substances cause damage to the ozone layer. CFC's are greatest of them.
There are many ozone depleting substances. These substances are the ones that can cause damage to the ozone layer.
The substances in atmosphere that absorb UV is ozone. Ozone layer is a layer of life.
The ozone layer is at risk because of the continues usage of ozone depleting substance by humans. These ODS contain CFCs which harm the ozone by decomposing it into oxygen molecule and nascent oxygen.
AC's etc produce that substance. The substance is CFC's.
Only ozone layer protects us from the UV rays. No other substance or gas can do that.
chlorofluorocarbons
Ozone layer contains ozone in it. Therefore, it is named so.
Ozone layer is formed of ozone. It is a gas.
Earth has a layer of ozone. It is present as the ozone layer.