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ozone layer
environ.	couche d'ozone atmosphérique; couche d'ozone stratosphérique; ozonosphère f
life.sc.	couche d'ozone
ozone layer The general stratum of the upper atmosphere in which there is an appreciable ozone concentration and in which ozone plays an important part in the radiative balance of the atmosphere
environ.	couche d'ozone

ozone layer : 84 phrases in 9 subjects

Astronomy	1
Chemistry	1
Environment	43
General	5
Life sciences	10
Name of organization	2
Obsolete / dated	2
Politics	1
United Nations	19