Which protocol is designed to phase out ozone-depleting substances?

Which protocol is designed to phase out ozone-depleting substances?

• A. Madrid Protocol
• B. Montreal Protocol
• C. Kyoto Protocol
• D. Paris Convention

Answer: (B)

The key idea is a global treaty specifically aimed at stopping substances that destroy the ozone layer by phasing them out through scheduled reductions and bans. The Montreal Protocol was crafted to reduce and eventually eliminate ozone-depleting substances like CFCs and halons, with later amendments broadening the list and tightening timelines. This focused, action-oriented approach distinguishes it from the other options: the Madrid Protocol relates to claims in Antarctica, not chemical controls; the Kyoto Protocol targets greenhouse gas emissions under climate treaties; and the Paris Convention (on industrial property) deals with patents, not environmental substances. So the Montreal Protocol is the agreement designed to phase out ozone-depleting substances.

The key idea is a global treaty specifically aimed at stopping substances that destroy the ozone layer by phasing them out through scheduled reductions and bans. The Montreal Protocol was crafted to reduce and eventually eliminate ozone-depleting substances like CFCs and halons, with later amendments broadening the list and tightening timelines. This focused, action-oriented approach distinguishes it from the other options: the Madrid Protocol relates to claims in Antarctica, not chemical controls; the Kyoto Protocol targets greenhouse gas emissions under climate treaties; and the Paris Convention (on industrial property) deals with patents, not environmental substances. So the Montreal Protocol is the agreement designed to phase out ozone-depleting substances.