...
....
.
Matter
(even living beings are matter) needs space: They have a certain volume
and a certain weight.
Experiment
1. Cut a big potato into
slices of 1 cm thickness.
2. Cut them into 1 cm broad
potato stripes ("pomme frites").
3. Make 1-cm cubes from
them.
4. Keep them at
a warm place for some days.