The common garter snake is a predator of the rough-skinned newt. These newts produce a potent neurotoxin that is concentrated in their skin, but garter snakes have evolved resistance to this toxin. This is an example of __________.

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The interaction between the rough-skinned newt and the common garter snake is an example of coevolution, where two or more species reciprocally affect each other's evolution. The newt's development of a potent neurotoxin and the garter snake's subsequent evolution of resistance to this toxin demonstrate natural selection at work within the context of coevolution.

The Common Garter Snake Is a Predator of the Rough-Skinned