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12 questions from this quiz
Studying rock layers to find age
Carbon material like wooden handles
Simpler tools are older than complex
2.5-1.5 million years ago
Pebble tools by hitting rocks
Simple hand axes
300,000-25,000 years ago
50,000 years ago
5 digits
Bone structure but not function
Species share a common ancestor
Natural selection in real-time
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