Some animals pant and sweat to speed evaporation of body moisture and thus cool themselves.
D
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Despitetheproliferationofotherfastermodesoftransportation,therailroadsremainthelargestcarriersofintercityfreightintheUnitedStates.
ThefirstimportantexpositionintheUnitedStateswasheldinPhiladelphiain1876.
HowmanypeopleareawarethatadancerwiththeNewYorkCityBallettypicallywearsoutaminimumoftwohundredpairsoftoeshoesperyear?
In1861itseemedinevitablethattheSouthernstateswouldbreakawayfromtheUnion.