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प्रश्न
______ was signed in 1987 to control emission of ozone depleting substances.
To control emission of ozone-depleting substances International Treaty was signed in 1987.
विकल्प
Kyoto protocol
Montreal protocol
Nagoya protocol
Cartagena protocol
MCQ
रिक्त स्थान भरें
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उत्तर
Montreal protocol was signed in 1987 to control emission of ozone depleting substances.
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