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Signal words: a single word used to indicate the relative level of severity of hazard and alert the reader to a potential hazard on the label. The signal words used are danger and warning.. Danger is used for the more severe hazards, while warning is used for less severe hazards.
One class of honest signal is the warning signal (aposematism), generally visual, given by poisonous or dangerous animals such as the yellow-banded and other poison dart frogs. Warning signals are honest indications of noxious prey, because conspicuousness evolves in tandem with noxiousness.he central question is when organisms with conflicting interests, such as in sexual selection, should be expected to communicate honestly (no presumption being made of conscious intention) rather than cheating.