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

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. 

Earth Day volunteers remove weeds as they work to restore Candlestick Point State Recreation Area's community garden, in San Francisco on April 14, 2012.
Darryl Bush/California State Parks Foundation/AP
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Question 1 of 20

1. When was the first Earth Day celebrated?

March 21, 1970

April 22, 1970

May 21, 1970

June 22, 1970

Question 1 of 20

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