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ozone layer

The ozone layer is the layer of air around the earth that helps to regulate the temperature.

(noun)

An example of the ozone layer is what is being hurt by global warming.

See ozone layer in Webster's New World College Dictionary

noun

the atmospheric layer within the stratosphere, extending from a height of c. 15 to c. 30 km (c. 9 to c. 18 mi) and having a heavy concentration of ozone: it absorbs dangerous ultraviolet radiation from the sun and serves to maintain the temperature of the atmosphere

See ozone layer in American Heritage Dictionary 4

noun

A region of the upper atmosphere, between about 15 and 30 kilometers (10 and 20 miles) in altitude, containing a relatively high concentration of ozone that absorbs solar ultraviolet radiation in a wavelength range not screened by other atmospheric components. Also called ozonosphere.

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