Cells organized themselves into organs, organs organized themselves into creatures. Creatures organized themselves into societies. The whole is organized as an ecosystem. It is man's destiny to be the instrument whereby Earth's ecosystem is propagated in space. Consider, gentle reader, the way in which the ecosystem is organized, the way that new organisms arise in such a way as to impart a dynamic equilibrium to the ecosystem.
Creatures fill niches in the ecosystem.
These niches represent opportunities to individual species, but also represent roles serving the whole from the ecosystem perspective. Last modified 9 April 1999.