Evolutions (survival) is based on symbiotic co-dependency, not survival of the fittest.
For once a prokaryote engulfed a cyanobacteria
And unconsumed, it became part of a whole,
Providing the chloroplasts of the plant cells.
For once a prokaryote engulfed an aerobes bacterium
And unconsumed, it became a part of a whole,
Providing the mitochondria of our animal cell.
For it is cooperation, not competition, which drives our evolution.
Let the Neo-Darwinist fight it out,
While we trade our genetic information on an open exchange
To the satisfaction of the concerned parties.
Can't fault your poetry though, enjoyed.