why was the montreal protocol enacted and when was it signed（関連順）

4:43

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2:38

NASA Sees Definitive Evidence of the Montreal Protocol's Success

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5:55

A Look Back at the Montreal Protocol

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12:02

What if the Montreal Protocol was never signed?

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3:26

Climate 101: Ozone Depletion | National Geographic

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Montreal Protocol 25th Anniversary

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The nightmare future humanity avoided

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10:14

Director's Cut: The Montreal Protocol

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0:17

Ozone and the Montreal Protocol

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6:53

Protocols, Treaties, and Agreements... what's it all about?

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How we Solved the Problem with the Ozone Hole?

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49:03

Montreal Protocol, 1987

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1,669 回視聴 - 6 年前

0:56

Celebrating Environmental Milestones: The Montreal Protocol

Stanford Woods Institute for the Environment

91 回視聴 - 4 年前

7:54

The Holes in the Ozone Layer and CFCs

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0:53

MONTREAL PROTOCOL/ 10 lines on ozone day.

Little Artists E-Learning

MONTREAL PROTOCOL

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994 回視聴 - 6 年前

結果 : why was the montreal protocol enacted and when was it signed