The chemical, which, by the way, cut down the number of mosquitoes exponentially, had the unfortunate side effect of killing off this little wasp i've got the scientific name for it somewhere in my report here, if you're interested that preyed on a type of caterpillar that in turn ate palm leaves. t. coraghessan boyle, "top of the food chain" this excerpt from "top of the food chain" is an example of which type of appeal?