Todd,
<How does nutritional stress
<cause mutations? What is nutritional stress anyway? Why should
<this particular mutation be so predictable? And so on.
I agree that mutations are the direct cause of the rise of new
species, or
evolution. I don't think mutations are caused by food sources. More
like,
mutations arise, and if they are more capable of thriving in an
environment
that contains mostlysuch and such a food source, they will be capable
of
beating out other competitors for that niche.
Judith