> I'm not familiar with that particular example, but I'm familiar with others. My favorite is the bombardier beetle, which is able to shoot burning chemicals out its back end a few inches (I'm not making this up) as a defense mechanism. The biological system that allows this to happen requires two separate chambers for the two chemicals that, when mixed, ignite. There's a third chemical that keeps them from being harmful while inside the beetle. Then there's a tube leading from each of the chambers to a single tube that leads out. It has been shown that this system never could have evolved, because if that system were missing any one component, he'd be blowing himself up all the time and never could have possibly survived the millions of years supposedly required to evolve the correct pieces.
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What if it wasn't the chemicals that evolved first, but the delivery system? Isn't it possible that the original defense was a foul smelling chemical, or some kind of irritant? It could have evolved the flammable chemicals in its last stage of development.

There's a very interesting book on the Creation vs. Evolution debate. There are 5 or 6 chapters online, the link is below. It supports evolution, but from a decidedly Christian perspective. You'll just have to read it.