In 1987, an agreement was formulated by the United Nations Environment Programme (UNEP) to freeze the production of “X” to prevent depletion of “Y”. “X” and “Y” respectively referred here are:
The correct option is (c) CFCs; Ozone. In 1987, the Montreal Protocol was signed to stop production of chlorofluorocarbons (CFCs), which deplete the ozone layer that protects Earth from harmful ultraviolet radiation. This step helped save the ozone.
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The correct answer is: (c) CFCs; Ozone. In 1987, the Montreal Protocol was signed under the United Nations Environment Programme (UNEP). It aimed to freeze the production of CFCs (chlorofluorocarbons) because they were damaging the ozone layer in the atmosphere, which protects the Earth from harmful ultraviolet (UV) rays. This helped prevent further ozone depletion.