Q.

Where is “Ground Zero”?

A. Greenwich
B. New York
C. Indira Point
D. Shriharikota
Answer» B. New York
Explanation: The Grand Canyon is a steep- sided canyon carved by the Colorado River in the United States in the state of Arizona. It is contained within and managed by Grand Canyon National Park, the Hualapai Tribal Nation, and the Havasupai Tribe. Nearly two billion years of the Earth's geological history have been exposed as the Colorado River and its tributaries cut theirchannels through layer after layer of rock while the Colorado Plateau was uplifted. While the specific geologic processes and timing that formed the Grand Canyon are the subject of debate by geologists, recent evidence suggests the Colorado River established its course through the canyon at least 17 million years ago.
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