Life on earth requires an ongoing supply of energy to
perform even the most basic functions, like
cell
division
and
muscle contraction
.
To learn some of the ways organisms get energy, click
on one of the choices below.
The
Body Farm:
Human corpses decay alfresco,
all in the name of science.
Turning
Garbage into Gold:
Seasoned gardeners depend
on a community of bacteria, worms, and insects
to get the most out of their plantings. Find
out why.