Know how to use "fewer" and "less"? Find out.
biological means by which a dangerous, or noxious, organism advertises its dangerous nature to potential predators. The predator, having recognized the dangerous organism as an unfavourable prey, thereupon desists from attacking it. Aposematic, or warning, mechanisms have evolved along with protective systems; it is advantageous for the protected organism not to risk the injury that is likely to occur in even a successfully repelled attack by a predator.