An american cockroach (periplaneta americana) can begin to turn away from approaching danger, such as a hungry toad lunging toward it or a flyswatter wielded by a cockroach-loathing human, in as little as a hundredth of a second after the air pushed in front of the moving object reaches the roach’s body. a cockroach has very sensitive wind sensors on its cerci, which are small appendages at the end of its abdomen. one cercus points slightly to the right, the other to the left. use what you know about moth orientation to bat cries to suggest how this simple system might provide the information the roach needs to turn away from an attacking toad, rather than toward it. how might you test your hypothesis experimentally?