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Why are present-day West Creek and East Creek in Unaweep Canyon called "underfit" streams?

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Final answer:

Present-day West Creek and East Creek in Unaweep Canyon are called 'underfit' streams because they are small in comparison to the size of the canyon they flow through.

Step-by-step explanation:

In geography, underfit streams are streams that appear too small or insignificant for the size of the valley or canyon they flow through. Present-day West Creek and East Creek in Unaweep Canyon are called 'underfit' streams because they are small in comparison to the large and deep canyon that they flow through. This suggests that the rivers were formed in a different geological period when the canyon was not as deep or wide as it is now.

Present-day West Creek and East Creek in Unaweep Canyon are referred to as "underfit" streams because they are much smaller than the canyon they flow through. This indicates that they were not the primary agents of erosion that created the canyon. Instead, it is believed that a much larger ancient river once flowed through, carving out the expansive canyon we see today. The current small creeks cannot be responsible for such extensive erosion, hence they are considered underfit for the existing topography.

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