•e.g. size range of unicellular
protoctists:
Micromonas pusilla Pelomyxa palustris
(1-3 µ) (3
mm)
Pelomyxa is 1,000 X as long;
(1,000)3 = 109 as
heavy as Micromonas!
by comparison: blue whale (100 tonnes) is
only 5 x107 X as heavy as a 2 g shrew!