You searched for: “ozone layer
ozonosphere, ozone layer
1. A region in the upper atmosphere, about 6–30 miles (10–50 kilometers) high, with significant concentrations of ozone, formed by the effect of solar ultraviolet (UV) radiation on oxygen and also present in trace quantities elsewhere in earth's atmosphere.
2. The layer of the upper atmosphere, from 15 to 50 kilometers (10 to 30 miles) above the earth's surface, where most atmospheric ozone collects, absorbing harmful ultraviolet radiation from the sun.

In the 1980's it was realized that industrial pollutants such as CFC's were damaging the ozone layer and that holes had appeared in it, especially over the Antarctic.

CFC refers to a gas containing carbon, hydrogen, chlorine, and fluorine; some forms of which are said to damage the ozone layer in the earth's atmosphere.

This entry is located in the following units: ozono-, ozon-, ozoni-, ozo-, oz- + (page 3) sphero-, spher-, -sphere- (page 10)
Word Entries at Get Words: “ozone layer
ozonosphere, ozone layer
The area that protects all organisms from the harmful ultraviolet rays of the sun, is located within the stratosphere, between 10 to 30 miles (16 to 48 kilometers) in altitude.
This entry is located in the following unit: Meteorology or Weather Terms + (page 5)