Is 0.0000210 tonnes as heavy as an Eye (Human)?
It's about three times as heavy as an Eye (Human)
The weight of an Eye (Human) is about 0.00000710 tonnes.
(adult)
A fully developed eye (in a person over the age of thirteen), weighs about 0.00000710 tonnes. The pupil of the eye varies depending on the amount of light it is exposed to, but typically measures about 4 mm across.
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