Question

Your apartment has a cockroach problem. when you walk across your kitchen floor late at night, you hear "crunch, crunch," as you trample on an army of cockroaches. what substance in the insects' bodies produces that sound, and of what is it made?

Answer 1

I don't think there's a specific "substance" that makes a roach crunch when its stepped on, however, their exoskeletons that provide protection, break open
That was nasty to talk about lol but I hope that helped (: