Answer:
early humans began walking upright before they began making tools. A rapid increase in brain size occurred before early humans began using symbols to communicate. And all of these traits emerged before humans began domesticating plants and animals.
Answer:
For example, early humans starting walking in upright way before they began constructing different tools. A rapid increase in brain size occurred before early humans began using a lot of techniques or symbols to communicate. And all of these traits appeared before humans began taming plants and animals.
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