Which treaty is related to the control of the emission of ozone-depleting substances (ODS) ?

Options

A. Montreal protocol (Canada) in 1987and effective in 1989
B. The air (prevention and control of pollution act , 1981
C. The environment (Protection) act , 1986
D. Earth summit ,1992

Answer

To answer the question regarding which treaty is related to the control of the emission of ozone-depleting substances (ODS), we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Ozone Depletion**:
- The ozone layer is located in the stratosphere and acts as a protective shield against harmful ultraviolet (UV) radiation from the sun.

2. **Identifying Ozone-Depleting Substances (ODS)**:
- Ozone-depleting substances include chemicals like chlorofluorocarbons (CFCs), which are commonly released from appliances such as refrigerators and air conditioners.

3. **Recognizing the Impact of ODS**:
- The release of ODS leads to the thinning of the ozone layer, allowing more harmful UV radiation to reach the Earth, which can cause skin diseases and cancer.

4. **Finding Relevant Treaties**:
- We need to identify treaties that specifically address the control of emissions of ODS. The options provided are:
- A) Montreal Protocol (1987)
- B) Air Prevention and Control of Pollution Act (1981)
- C) Environment Protection Act (1986)
- D) Earth Summit (1992)

5. **Evaluating the Options**:
- The **Montreal Protocol**, signed in 1987 and effective from 1989, is specifically aimed at phasing out the production and consumption of substances that deplete the ozone layer.
- The other options listed (Air Prevention and Control of Pollution Act, Environment Protection Act, and Earth Summit) do not specifically target ozone-depleting substances.

6. **Conclusion**:
- Based on the information and analysis, the correct answer is **A) Montreal Protocol (1987)**, as it is the treaty specifically related to the control of emissions of ozone-depleting substances.