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Earth Sciences •

The Grand Canyon

Learn why the Grand Canyon is a geological phenomenon and one of the seven natural wonders of the world.

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What's in The Grand Canyon

8 facts · Earth Sciences

Sample questions

Scientists guess the Grand Canyon can date as far back as:
The oldest black rock is called the:
When was the youngest layer of the canyon’s walls laid down?
What is the youngest layer of the canyon’s walls called?
Which river flows through the Grand Canyon?

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FactSumo

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