At one time, the Bering Strait was much deeper than it is today.

That statement is false.

Explanation:

Bering Strait is the sea region that located  between Cape Dezhnev and Russia. Bering strait is deeper today compared to what it is in the past. This happened during the ice age.

In the past, most sea actually shallower than they are today. When the ice age was over, the ice melts into water and drastically increase the amount of water within the sea. This made the sea became deeper and take up larger portion of the Earth's surface.

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