The last ozone-layer damaging chemicals to be phased out are finally falling in the atmosphere
The last ozone-layer damaging chemicals to be phased out are finally falling in the atmosphere
uk.news.yahoo.com The last ozone-layer damaging chemicals to be phased out are finally falling in the atmosphere
HCFCs were a temporary replacement for CFCs, the initial subject of the 1987 Montreal protocol.
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*concentrations of
Though I suppose the breakdown products of molecules themselves are falling out of the atmosphere, in a way.