Multiple choice

Why was there a "land bridge" into the Americas?

  1. they built it

  2. there was already a bridge made of wood

  3. ocean levels were down so they walked on the exposed land.

  4. aliens
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

During the Ice Age, vast amounts of water were frozen into massive glaciers, causing global sea levels to drop significantly. This drop in sea level exposed a strip of land connecting Siberia and Alaska, known as Beringia, which humans could walk across.

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