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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. 

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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