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16 sept. 1987 - Montreal Protocol

Description:

International treaty to phase out ozone depleting substances. The impact was that it led to ozone layer recovery. It had an impact in a positive way because it reversed atmospheric damage.

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ByOk Ok
il y a 1 jrs
0
0
19

Date:

16 sept. 1987
Maintenaint
~ Il y a 37 ans
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