The Montreal Protocol, an international treaty signed in 1987, aimed to protect the ozone layer by phasing out the production and use of ozone-depleting substances such as chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs).
As a result of the Montreal Protocol, the levels of these harmful substances in the atmosphere have significantly decreased, leading to a decrease in the depletion of the ozone layer. This has helped to prevent further damage to the ozone layer and has allowed it to gradually recover.
Overall, the Montreal Protocol has had a positive effect on the Earth's ozone layer by reducing the amount of ozone-depleting substances in the atmosphere and helping to protect the ozone layer from further harm.
what effect did the Montreal protocol have on the earth's ozone?
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