Most Geologists Think the Elevation of Mountains Above Sea Level

question 89

Multiple Choice

Most geologists think the elevation of mountains above sea level is limited by earth's gravity because _______ .

• A) rock cliffs are subject to gravity failure and can only be about 1km high
• B) the earth's mantle is too weak to support the load of large mountains
• C) thickening of the crust in mountain belts produces a weak deep crust the spreads by gravity collapse, limiting the elevation
• D) rocks can never reach escape velocity

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