Montreal protocol was signed in

Which of the following is correct ? 1)CFC is discharged in the lower part of the atmosphere, move upward and reach stratosphere 2) Montreal protocol was signed to reduce CO2 3) Ozone hole is a small pore created in tropospheric ozone layer 4) Jhum cultivation is a method of afforestation

An international treaty known as Montreal Protocol was signed to control emission of:

Recognizing the deleterious effects of ozone depletion an international treaty, known as the Montreal protocol, was signed at

Assertion : Montreal protocol, was signed at Montreal (Canada) in 1987 to control the emission of ozone depleting substances. Reason : Kyoto protocol, held in Kyoto (Japan) in 1987, has specified the commitments of different countries to mitigate climate change.

Assertion : Montreal protocol, was signed at Montreal (Canada) in 1987 to control the emission of ozone depleting substances. Reason : Kyoto protocol, held in Kyoto (Japan) in 1987, has specified the commitments of different countries to mitigate climate change.

Assertion : Montreal protocol, was signed at Montreal (Canada) in 1987 to control the emission of ozone depleting substances. Reason : Kyoto protocol, held in Kyoto (Japan) in 1987, has specified the commitments of different countries to mitigate climate change.