Indirect ways of assessing past temperatures, using so-called temperature proxies, take measurements of responses to past temperature change that are preserved in natural archives such as ice, rocks and fossils.
Wikipedia has an article on: Reorder tone. Wikipedia. fast busy signal â(plural fast busy signals) (telephony) An audible signal on a voice phone line that sounds more frequently than a standard busy singal, indicating that no transmission path to the called phone number is available.
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.