Level of ozone has changed. It is variable through out the globe.
The ozone depleting substances affect ozone levels. They react with ozone to deplete it.
Ozone layer is depleting. The levels of ozone are falling.
The ozone layer is a region in the stratosphere. The ozone levels are the maximum in that region.
High ozone levels are by lightening. Soldering also produces ozone.
The ozone levels in 1998 were low. It was because of the CFC's.
You do not want to reduce ozone levels. It is vital for life.
Ozone levels do vary place to place. Equator has the maximum amount of ozone.
High levels of ozone in the atmosphere can cause
High levels of ozone in the atmosphere can cause
Ozone levels are not high in the morning because sunlight is needed to trigger the chemical reactions that create ozone in the atmosphere. As the sun rises and temperatures increase, these reactions are facilitated, leading to higher ozone levels later in the day.
Ozone detection is to detect levels of ozone. It measures the quantity in ozone layer.
The ozone issue has changed with time. The use of CFC first depleted the ozone but now it is stable.