By ______ years ago, modern human beings had spread to every continent except Antarctica.
A) 2,000
B) 12,000
C) 2 million
D) 5 million

Name: By ______ years ago, modern human beings had spread to every continent except Antarctica. A) 2,000 B) 12,000 C) 2 million D) 5 million
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By around 12,000 years ago, modern humans had spread to every continent except Antarctica, as they had developed the necessary tools and skills to adapt to various environments.

By ______ Years Ago, Modern Human Beings Had Spread to Every