Final answer:
The Montreal Protocol, signed in 1987, is the treaty responsible for reducing worldwide CFC production significantly.
Explanation:
The Montreal Protocol, signed in 1987, is responsible for lowering the levels of chlorofluorocarbon (CFC) production worldwide. This international agreement aimed to reduce the consumption and production of CFCs to protect the ozone layer. The protocol has been successful in achieving its goal and has led to the phase-out of harmful substances.
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