Consider the following statements:

1. Montreal Protocol mandates phasing out substances that deplete the ozone layer.

2. The Montreal Protocol is among the first universally ratified treaties in UN history

3. The ozone layer protects the earth from both UVA and UVB radiation.

Select the correct answer using the codes given below:

a) 1 only

b) 1 and 2 only

c) 2 and 3 only

d) 1, 2 and 3

Ans : B

The Montreal Protocol is hailed as an exceptional example of International co-operation under the aegis of UN that has been so successful. It deals with substances that deplete the ozone layer – which protects the earth’s surface from harmful Ultra Violet rays. However, it only filters out UVB rays and does not protect us from UVA rays.