Teaching BPSC बिहार प्राथमिक (1 to 5) शिक्षक भर्ती 4.0 Mock Test Environmental Studies Environment Ozone Depletion
Ozone layer protection is an important environmental initiative undertaken all over the world. Select the reason that led to the protection of the ozone layer.
1
Ramsar Convention
2
Montreal Protocol
3
Kyoto Protocol
4
More than one of the above
5
None of the above