Several units of measurement are commonly applied to ozone: ppm - parts per million, usually parts per million volume (ppmV), detailing the number of molecules of ozone per million molecules of "air". Dobson Units (DU) - The number of ozone atoms in a column of atmosphere with a width and depth of a centimeter2 or meter2, and the entire height of the atmosphere from Earth's surface to the Sun (or the satellite measuring it). %wt or %vol - for a given amount of gas, how much of its mass (%wt) or volume (%vol) is just ozone. (Common for ozone generators.) mass/unit volume, pascals (partial pressure), and I won't atempt to chew up these definitions...
Ozone layer contains ozone in it. Therefore, it is named so.
Earth has a layer of ozone. It is present as the ozone layer.
Earth and Venus have a protective ozone layer. These planets have ozone molecules in ozone layer.
There are no layers in the ozone layer. It is a single layer of pool of ozone gas.
Ozone layer is a complete layer. Only the ozone at the poles is destroyed.
Ozone layer contains ozone in it. Therefore, it is named so.
ozone layer in Tagalog: ozone layer (no direct Tagalog translation)
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.
Ozone layer is the layer of ozone. Humans are altering it by CFC's.
The ozone layer is in the stratosphere. It is a pool of ozone molecules.
Earth and Venus have a protective ozone layer. These planets have ozone molecules in ozone layer.
In the ozone layer. Where the ozone is.
The stratosphere has ozone in it. It is present as ozone layer.
The ozone layer is a single layer. So there is no point of WHICH ozone layer.