Archimedes Plutonium wrote in
:

Wed, 03 Nov 2004 16:50:07 +0000 Dan Holdsworth wrote:

Down at the microscopic level, with bacteria and protozoa, the
plant/animal dividing line is extremely blurred. An organism
might one day be wholly photosynthetic; it might the next be
50/50 photosynthetic/predatory; it might then become a predator
for a brief while.


Maybe I need to focus more on energy pathways such as
hydrogen-sulfur or carbon-oxygen and see if there are two creature
species always present when such an energy pathway exists and
whether both species are vital to one another for each to live and
thrive.


I am sure that a little thought should show you that for the second
to survive, the first must be around long enough to produce enough
of the as you say, hydrogen-sulfur or carbon-oxygen to support the
life of the second. In the spring, plants start growing before
insects appear to eat them.

Sean