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Which of the following is a probable explanation for the formation of the Valles

ID: 2146660 • Letter: W

Question

Which of the following is a probable explanation for the formation of the Valles
Marineris?
A. It is a canyon carved by ancient water flow on the surface of Mars.
B. It is a scarp that formed when the Martian crust cooled and shrunk.
C. It resulted from plate tectonic movement on Mars.
D. It resulted from the stretching of the mantle by the rising of the Tharsis bulge.
E. Both it resulted from plate tectonic movement on Mars and it resulted from the
stretching of the mantle by the rising of the Tharsis bulge are probable
explanations.

Explanation / Answer

A. It is a canyon carved by ancient water flow on the surface of Mars.

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