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Is 0.000390625 long tons as heavy as a Human Brain?

It's about three-tenths as heavy as a Human Brain
The weight of a Human Brain is about 0.00133 long tons.
(adult)
The average weight of an adult human brain is between 0.00133 long tons. 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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