Question

What is Montreal Protocol? 

Answer 1

1. The goal is to safeguard the stratosphere's ozone layer by reducing the production of compounds that contribute to its depletion.
2. Chlorofluorocarbons (CFCs), halons, carbon tetrachloride (CCl₄), and methyl chloroform contribute to ozone depletion.
3. The Montreal Protocol was negotiated within the Vienna Convention for the Protection of the Ozone Layer (1985), which defines governments' responsibility to protect human health and the environment from the negative impacts of ozone depletion.
4. Although countries have banned CFCs, the amount of chlorine in the atmosphere is decreasing.
5. However, it will take another 50 years for chlorine levels to recover to their natural levels.