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0.000000002250 megatonnes is about one-and-two-thirds times as heavy as a Human Brain
In other words, the weight of a Human Brain is 0.5990 times that amount.
The average weight of an adult human brain is between 0.000000001350 megatonnes. In humans and primates, sight and vision utilize about 30 different parts of the brain which together account for about half of the brain's size.
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