1. What isthe approximate
percentage (in mass) of water
in the human body? Is this
percentage expected to be
larger in the adult or in the old
individual?

Gap-fill exercise

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Approximately 65% of the human
individual mass is water. The , for
example, has around 90% of water in
mass, the , 85%, and the bones
have between 25% and 40% of water.

Younger adult individuals have
proportionally water in mass than
older individuals.