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organized by United nations environmental program over 30 countries agreed to cut CFC emissions by half by 2000 Stratospheric ozone layer
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further measures to accelerate phasing out of ODS and replacement by substitute chemicals
A list shows items. A timeline shows sequence.
Use Timetoast to make dates, milestones, and turning points easier to understand in a clear visual format. Timetoast is a timeline maker for work, school, research, and stories.