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Researcher 2 Agrees

ACTSCI-AKQHTY

Which of the following statements about the formation of the Grand Canyon would Researcher 2 agree with but Researcher 1 would disagree?

Age of the Grand Canyon

A

The lack of sediments that are over 6 million years old shows that the Grand Canyon was formed in the last 6 million years.

B

Thermochronometry shows that much of the Grand Canyon was formed in the last 6 million years.

C

The shape of the Grand Canyon shows that the Colorado River has been flowing in its present course for more than 60 million years.

D

Many parts of the Grand Canyon were formed by the wind eroding the bedrock of the canyon.