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Many larger rivers in the Colorado Plateau region meander in deep, narrow canyons and have no floodplains. How could this happen?

Which of the following areas is underlain by karst topography?

________ are smoothly tapered, elongated hills of till shaped by an overriding, continental ice sheet.

A(n) ________ is a closed depression formed by melting of an ice block buried in a moraine or outwash plain.

A(n) ________ measures the variation in sea-surface elevation, which mimics the shape of the seafloor.

How do icebergs in the North Atlantic Ocean originate?

Which one of the following concerning stalactites and stalagmites is NOT true?

The hot spring deposits at Mammoth Hot Springs, Yellowstone National Park, are travertine. What rock probably lies somewhere beneath the hot springs?

Compared to the age of the Earth accepted as correct today, how did seventeenth and eighteenth century proponents of catastrophism envision the Earth’s age?

________ are deposited by meltwater streams; they are composed of stratified sand and gravel.