C. Give short answers for the following questions. 1. How do we get to know about the existence of early humans?
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By studying fossilized bones, scientists learn about the physical appearance of earlier humans and how it changed. Bone size, shape, and markings left by muscles tell us how those predecessors moved around, held tools, and how the size of their brains changed over a long time.
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The ability to make and use tools, our control of fire and our knack for finding shelter from the elements all contribute to our collective knowledge. Sites like Blombos Cave, shown here, have given scientists evidence about how early humans lived and what they were capable of.
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