It covers the Earth, unless it is late winter / early spring at one of the poles. See the question below for more.
Ozone layer contains ozone in it. Therefore, it is named so.
Earth has a layer of ozone. It is present as the ozone layer.
Ozone is a layer which protects us. Actually ozone is just a gas, ozone layer is the layer.
Earth and Venus have a protective ozone layer. These planets have ozone molecules in ozone layer.
the ozone layer is the the part of the atmosphere that screens out harmful radiation from the sun.
See "What is the condition of the ozone layer now?"See "How large is the ozone hole now?"See "What is the condition of the ozone layer?"
Yes, it has. Size of ozone layer changes according to the use of CFC's.
Ozone layer was depleted. It's size has been coming to normal in recent years.
The size of the ozone layer has changed. Due to the CFC's the ozone has decreased. Most of the loss has been over the poles.
It is hard to fix the hole in the ozone layer. It is because ozone hole is very big in size.
The size of ozone layer in year 2008 was moderate. It was recovering.
The ozone over Antarctica has been replenishing. It is because of the ban on CFC's.
Yes, the size of ozone layer is changing. It is because of change in concentrations of CFC are variable.
Molecule size changes of the ozone. When it is being depleted the most.
The hole in the ozone layer varies in size during the year. In 2012, the largest extent of the ozone hole was 8.2 million square miles. This is roughly the size of North America.
The size of ozone hole is changing. It can either be increased or decreased.
size equal to three element of oxygen