Which edition of "Earth Hour" was observed on 28 March 2015 across the world?
Options:
1) 11th
2) 14th
3) 15th
4) 9th
Answer:
4) 9th
Other Details:
Options:
1) 11th
2) 14th
3) 15th
4) 9th
Answer:
4) 9th
Other Details:
- Over 170 countries participated in the event and more than 1,200 landmarks observed the Earth Hour
- Adopting a cleaner and more sustainable lifestyle by embracing renewable energy solutions is the aim of Earth Hour
