Incorrect
Explanation
On April 22, 1970, the United States celebrated its first Earth Day in which over two thousand colleges and universities and roughly ten thousand primary and secondary schools participated.
Solve this puzzle
There are 3 houses. The green house is in front of the brown house. The brown house is in the back of the green house. Where is the white house?
In Washington D.C. In front of the black house In front of the brown house In front of the green house