Ozone layer is depleted. The main cause are CFC's.
Ozone layer is threatened. It is due to CFC's.
The poles are threatened. It is because of the low temperatures.
Ozone layer contains ozone in it. Therefore, it is named so.
ozone layer in Tagalog: ozone layer (no direct Tagalog translation)
global warming plus greenhouse gas and maybe a damaged ozone layer temperature rise in the seas
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.
The ozone layer is in the stratosphere. It is a pool of ozone molecules.
Ozone layer is the layer of ozone. Humans are altering it by CFC's.
Earth and Venus have a protective ozone layer. These planets have ozone molecules in ozone layer.