Question

new york city group of answer choices is built on a lateral moraine. was buried by an ice sheet 20 m thick during pleistocene times. has glacially polished bedrock in central park. was covered by the cordilleran ice sheet of the pleistocene.

Answer 1

B. New York City "has glacially polished bedrock in Central Park".

Glacially polished bedrock is a result of glacial erosion, which occurs when a glacier moves over the land, scraping and abrading the underlying surface rocks. In the case of New York City, glacial erosion during the Pleistocene period caused the formation of the Hudson and East Rivers and left behind polished bedrock in Central Park.

This polished bedrock is visible in a number of areas in Central Park, including the Great Hill, the Hernshead, and the Ramble. The rocks in these areas have been smoothed and rounded by the action of the glaciers, and their surfaces bear the telltale "glacial polish" of the glacial erosion process.

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