They said, "God would be providing such natural pressures." -- I said, "Eureka! So, you agree -- Evolution exists, and may be the very tool your God used to make the variety of species, and that He was smart enough to give his creatures adaptability so they could survive environmental changes!"
That is kinda the idea behind I.D. If all the variants for survival are already in the species' genetic coding they would adapt to their surroundings to survive based on what they're eating, what sort of terrain they have to deal with, what climate it is, etc. and the offspring eventually take on those qualities. It's like breeding dogs and cats for their specific traits or growing crops to gain a different flavor or quality to them. It's not like saying a frog will evolve into a bird or something.
I believe the main complaint the fundamentalists have is that evolution teaches that everything came from a theory that says the world started from a single cell that advanced its lifecycle to become more and more creatures until humans eventually came about. It is a theory, but so is I.D. according to many people as well. Better things could be done if people would stop trying to argue over where we came from or how all the different species were formed during the big bang or whichever idea is popular now.
The optimum committee has no members. -- Norman Augustine