quote:
5- Some organisms reproduce other's don't reproduce.
6- Some organisms survive other's don't survive
In the past you have said that 6 is NOT valid since
no organisms are immortal i.e. No organisms survive.
The concern in evolution is to study the diversity of
life on earth, and to investigate the origins of that
diversity.
If one wishes to study diversity, one cannot neglect the
diverseness. One is stuck with looking at variations
between and within species/populations.
That other areas of biology neglect/filter-out the diversity
is irrelevant, since the prime motivation is generalisation
NOT investigation of diversity.
Some general observations:
1. Organisms are (in some sense) 'born'.
2. Organisms live.
3. Organisms die.
The duration of 2. is dependent on the organisms relationship
with it's environment + inherent limitations.
The environment consists of things which can be overcome given
an approriate structure or strategy (e.g. low-light, high temp.,
etc.) and those which cannot (e.g. lightening, asteroids, etc.).
During 2. some organisms are responsible for step 1. in
their offsprings' cycles. i.e. they reproduce.
Reproduction does not produce perfect copies of the parent
or parents.
Those with longer duration in step 2. have a greater number of
opportunities to reproduce (but may not due to other
environmental factors ... like no mates, not enough food, etc.)
Within a single species, those individuals that have longer
number 2. TEND to leave more offspring (unless they are humans
)
Within a single species that exhibits variation (and at some level
ALL species vary) some variants MAY be more plentiful than
others.
There must be some explanation for this.
Diversity = F(survival, reproduction)
Survival = F(environment, traits)
Reproduction = F(environment, traits, survival)