Which theory do most scientists believe about the first inhabitants of North America?
(1 point)
They walked across the frozen Bering Land Bridge.
They swam across the Pacific Ocean.
They sailed across the Atlantic Ocean.
They walked across the frozen Hudson Bay Bridge.
Most scientists believe that the first inhabitants of North America walked across the frozen Bering Land Bridge.
Most scientists believe that the first inhabitants of North America walked across the frozen Bering Land Bridge.
Most scientists believe that the first inhabitants of North America walked across the frozen Bering Land Bridge.
To arrive at this theory, scientists have studied various lines of evidence, including archaeological findings, genetic studies, and geological data. The Bering Land Bridge, also known as Beringia, was a land bridge that connected modern-day Siberia in Russia to Alaska during the last Ice Age when sea levels were significantly lower. This land bridge was formed by the lower global sea levels caused by the accumulation of water in massive ice sheets.
Around 15,000 to 20,000 years ago, it is believed that early humans from Asia, who are commonly referred to as the ancestors of Native Americans, migrated across this land bridge into North America. They likely followed animal herds, such as mammoths and bison, and slowly expanded southward over time.
This theory is further supported by genetic research, which has found genetic similarities between Indigenous peoples of the Americas and populations in Asia, particularly Siberia. Additionally, there is archaeological evidence of ancient human settlements and artifacts found in Alaska and other parts of North America, which further suggests a migration from Asia.
It is important to note that while this theory is widely accepted among scientists, research and discoveries are ongoing. As new evidence emerges, our understanding of the first inhabitants of North America may evolve and change.