‘Silent valley’ is now converted into a …………

As a greenhouse gas this is more powerful than carbon dioxide.

Across many countries, Green Peace Movement has taken the impact on …………

“Niyamgiri” is present in ……………

The movement to prevent public disorder due to alcohol abuse is called

The ideology which became famous in Germany after the First World War.

Martin Luther King Jr. belonged to

The Indian who influenced Martin Luther King Jr.

2 lakh people gathered in Washington for a rally on 28th August in the year.

The black leader in USA who said that the struggle should be armed.