By Earth history standards, the Grand Canyon is ________.
A) not important
B) as old as the Earth
C) very old
D) young
E) becoming a first-order landform

Question

Quizplus · Accepted Answer

The Grand Canyon is relatively young in the context of Earth's history, having been formed by the Colorado River cutting through the rock over the past 5 to 6 million years, which is recent compared to the age of the Earth itself, about 4.5 billion years.

By Earth History Standards, the Grand Canyon Is ________