When Earth day celebrated first time?
Correct answer: D. 22, April 1970
- A. 22, April 2005
- B. 22, April 1998
- C. 22, April 1969
- D. 22, April 1970
Explanation
The first Earth Day was held on 22 April 1970 in the United States, helping launch the modern environmental movement. The later dates in the options are not the inaugural observance.
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