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Levart [38]
3 years ago
14

A 2-year-old human's brain is _____ percent of the adult brain's weight. 55 65 75 80

Biology
1 answer:
bija089 [108]3 years ago
3 0
The answer to this question would be 75%

At 2 years old, the human brain is already 75% of adult weight. It will be still growing and at 6 years old age it will become 90% of adult weight. The skull will also grow at the same rate because it has to accommodate a space for the brain to grow. That is why the suture joint of the skull in children is not completely closed.
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