The Land Bridge Story

an early family member

• ancestor

• theory

• migration

an idea based on study and research

• ancestor

• theory

• migration

movement of people, probably took place very slowly

• ancestor

• theory

• migration

One theory is that there was once a "bridge" of land between Asia and North America.​ Scientists call this land bridge (a)   .

• Beringia
• Asia
• migration

Why was the sea level significantly lower during the Ice Ages?

• Due to the large amount of water locked up in ice sheets

• Due to increased evaporation of water from the oceans

• Due to the melting of glaciers

• Due to the rise in global temperatures

What was the effect of the colder climate during the Ice Ages?

• Expansion of ice sheets and retreat of forests

• Increase in forest cover and decrease in ice sheets

• No significant changes in ice sheets or forests

• Decrease in ice sheets and expansion of forests

How was the climate during the Ice Ages different from today's climate?

• The climate during the Ice Ages was warmer than today's climate.

• The climate during the Ice Ages was similar to today's climate.

• The climate during the Ice Ages was colder than today's climate.

• The climate during the Ice Ages had more rainfall than today's climate.