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Kết quả (Anh) 1:

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Kết quả (Anh) 2:

But what about Selam's brain, 3.3 million years ago?
Her skull tells us all we need to know. We have her milk teeth and her adult teeth, which give us her age: three years old. And we have a cast of the inside of her skull, which tells us about her brain.
ZERAY ALEMSEGED: When you have this you can directly measure how much of the brain was formed at age three.