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How much do you know about Earth Day? Take our quiz!

Darryl Bush/California State Parks Foundation/AP
(Read caption)

April 22 marks the 42nd anniversary of Earth Day, a day intended to inspire awareness and promote appreciation for the Earth's natural environment. In honor of the holiday, test your knowledge of Earth Day history, trivia, and statistics. 

1. When was the first Earth Day celebrated?

March 21, 1970

 

April 22, 1970

 

May 21, 1970

 

June 22, 1970

 
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