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The sea level dropped when glaciers trapped water.
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∙ 11y ago
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What did scientists find at cactus hill?
they found ancient artifacs that tell them that there might be ppl living there before the land bridge
Why do Scientists believe that forces in the Earth's mantle move the Earth's crustle plates What do the arrows in the diagram represent?
The arrows represent convection and how magma flows through the mantle. When a divergent boundary is formed, the land sinks into the mantle and goes through the convection system.
How many major biomes are on earth?
Most scientists believe that there are five major land biomes. However, some believe that there can be as many as fourteen biomes.
How was the land bridge formed?
Land bridges aren't actually formed, they are already there but covered by the sea. When a glacial period starts, the water evaporated from the oceans falls as snow on the land and then compacts as ice which does not melt. Continual removal of water from the oceans over thousands of years causes sea level to drop and exposes the "land bridges".
What do geologists think happened during the last ice age?
A land bridge connected Siberia and Alaska
Why do scientists believe the first inhabitants crossed the Land Bridge?
to find riches
How do many scientists believe the earliest men arrived in the western hemisphere?
They believe that men traveled across a land bridge.
Witch theory of early migration to north America do many scientists believe?
people crossed a land bridge
What was the name of the land bridge that scientists believe early humans crossed over to migrate to North America?
The answer is Beringia.
Why do scientists think that the first people crossed the land bridge?
to find riches
How do scientists think people migrated from Asia to the Americas in the last ice age?
They believe a land bridge existed between what is now Russia and Alaska. Sea levels would have been lower at the time due to the amount of ice on land.
About how many years ago was the Bering Land Bridge said to have formed?
The land bridge the connected Alaska to Russia was in existence around 10,000 years ago. It formed because sea levels were lower at the time due to more of Earth's water being frozen in the icecaps and other glacial structures.
What connected Asia and north america?
The Bering Land Bridge. For mor info and an animated view of the land bridge as it flooded out, see this site: http://instaar.colorado.edu/QGISL/bering_land_bridge/
When did Central American land bridge form?
About 25 to 40 thousand years ago, the Ice Age began and the land bridge between present day Alaska and Asia formed.
Where did Native Americans came from?
They had crossed the land bridge, following the herd of animals wich they hunted. The land bridge was a bridge of ice that formed from other continents to North America. That's when they crossed it. Then, it dissapered again. They're from Siberia
What effects do vehicles have on water land and air?
Minecraft should answer your question bud. LOLOLOLOLOLOL. Scientists believe that people will believe and continue reading anything scientists believe. GET OWNED SON , LOLOLOLOLOL
How did people migrated to the Americas in prehistoric times?
Scientists believe that the first Americans, called the Paleo-Indians, came to the continent from Asia well over 10,000 years ago. At that time, North America and Asia were connected by a land bridge between what is now Alaska and Siberia. Scientists call the ancient land bridge that once existed Beringia.The first Paleo-Indians that crossed Beringia may have been following herds of animals.
