posted on Aug, 21 2005 @ 01:06 AM
Originally posted by Amorymeltzer
I'm just saying that the Earth has limited resources.
Earth especially has one very large limited resource.. the sun.
It is a mute point by our standards.. good ol' Sol is something we can count on to always be there. But she wont be. Earth is dependant on the sun
so therefore Earth is not self-sustaining.
But that's a technicality..
If you zoom in nice and tight, not take into consideration external influences such as big hunks of rock or alien invasions, and remove humans.. then
yes Earth is self-sustaining. The planet's done a great job of keeping the surface green and the oceans wet. It is a closed system (except for
germs from Mars) so all variables are constantly refreshing themselves in elegant harmony and balance with all the others. But there's that catch I
These damn dirty apes (us).
We are just as much a part of Earth as rocks are. We break the equation. Soon, we could very likely become just another failed species.. like the
Dodo's or the Neanderthols. Earth ridding herself of a threat. We are capable of destroying the planet, and ruining the ability to self-balance,
and thus self-sustain. It would take a whole lot of nukes to do it, but it's within our power. By this reasoning, the earth is not self-sustaining.
Simply because it is possible for the planet to evolve a species that could turn around and destroy the planet.
Now if only we could make self-sustaining nuclear powered food replicators. That would be neato.