HISTORY
ORIGINS OF CIVILIZATION PREHISTORY300 BC
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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People followed the animals across the land bridges.
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Land bridges were exposed.
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Glaciers formed.
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Moving glaciers formed mountains, lakes, and rivers.
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Detailed explanation-1: -In the 1970s, college students in archaeology such as myself learned that the first human beings to arrive in North America had come over a land bridge from Asia and Siberia approximately 13, 000 to 13, 500 years ago. These people, the first North Americans, were known collectively as Clovis people.
Detailed explanation-2: -The till and outwash were deposited to the south, forming the fertile farmlands of the United States. The ice carved out the Great Lakes basins, which are rimmed by end moraines. Glacial lakes were abundant in the Canadian prairies, North Dakota, and Minnesota.
Detailed explanation-3: -Glaciers form on land, and they are made up of fallen snow that gets compressed into ice over many centuries. They move slowly downward from the pull of gravity. Most of the world’s glaciers exist in the polar regions, in areas like Greenland, the Canadian Arctic, and Antarctica.
Detailed explanation-4: -Glaciers exist in both the United States and Canada. Most U.S. glaciers are in Alaska; others can be found in Washington, Oregon, California, Montana, Wyoming, Colorado, and Nevada (Wheeler Peak Glacier in Great Basin National Park).