Teaching BPSC बिहार प्राथमिक (1 to 5) शिक्षक भर्ती 4.0 Mock Test General Knowledge Ecology and Environment Conservation efforts: India and World
The 'Agenda 21' of Rio Summit 1992 is related to:
1
Sustainable Development
2
Polluter-Pays Principle
3
Environmental Education
4
More than one of the above
5
None of the above