Fact sheet page: 1 2 3 4 5 6 7 8 9 Quiz 1999 Quiz 2000 The Ozone layerOzone-destroying chemicals
Ozone depletion over CanadaSince the late 1970's, industrial chemicals have caused a thinning of about 6 per cent in the ozone layer over southern Canada. Environment Canada ozone measuring stations* show the natural variability of stratospheric ozone, as well as the depletions in recent years. * average annual depletions from five monitoring stations
Fact sheet page: 1 2 3 4 5 6 7 8 9 Quiz 1999 Quiz 2000
Created :
2002-08-23
Modified :
2004-03-05
Reviewed :
2004-03-05
Url of this page : http://www.msc.ec.gc.ca
/cd/factsheets/ozone/page3_e.cfm The Green LaneTM, |
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