a defense provided by the body against disease concerning the way someone acts a person who speaks two languages concerning living in a colony how much is spent on things; the process of eating and drinking to show the relationship between two items or events. the length of time that something lasts definite, clearly stated bringing things together into a whole the quality or state of being human and being able to die a change; in genetics: any event that changes genetic structure control center of a cell the beginning best a very small piece of something concerning sound being sensitive; in physiology: the ability of an organism or part of an organism to react to stimuli; in electronics: the ability of a radio device to react to incoming signals the degree to which people or things are the same the wavelengths of colors from red to violet concerning time